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Document And Entity Information - shares	6 Months Ended
Document And Entity Information - shares	Jun. 30, 2018	Aug. 07, 2018
Document And Entity Information [Abstract]
Entity Registrant Name	NCS Multistage Holdings, Inc.
Entity Central Index Key	0001692427
Trading Symbol	ncsm
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding (in shares)		44,908,920

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current assets
Cash and cash equivalents	$ 33,477	$ 33,809
Accounts receivable - trade, net	40,394	47,880
Inventories	30,991	33,135
Prepaid expenses and other current assets	3,637	1,616
Other current receivables	5,983	1,369
Total current assets	114,482	117,809
Noncurrent assets
Property and equipment, net	25,691	23,651
Goodwill	179,519	184,478
Identifiable intangibles, net	126,876	136,412
Deposits and other assets	1,416	1,563
Total noncurrent assets	333,502	346,104
Total assets	447,984	463,913
Current liabilities
Accounts payable—trade	8,320	7,448
Accrued expenses	5,292	6,673
Income taxes payable	129	10,561
Current contingent consideration	11,695
Other current liabilities	2,361	1,673
Current maturities of long-term debt	2,801	5,334
Total current liabilities	30,598	31,689
Noncurrent liabilities
Long-term debt, less current maturities	22,240	21,702
Noncurrent contingent consideration		12,835
Other long-term liabilities	1,224	4,513
Deferred income taxes, net	20,427	24,183
Total noncurrent liabilities	43,891	63,233
Total liabilities	74,489	94,922
Commitments and contingencies (Note 9)
Stockholders' Equity
Preferred stock, $0.01 par value, 10,000,000 shares authorized, one share issued and outstanding at June 30, 2018 and December 31, 2017, respectively
Common stock, $0.01 par value, 225,000,000 shares authorized, 44,926,665 shares issued and 44,908,317 shares outstanding at June 30, 2018 and 43,931,484 shares issued and 43,913,136 shares outstanding at December 31, 2017	449	439
Additional paid-in capital	405,550	399,426
Accumulated other comprehensive loss	(77,631)	(66,707)
Retained earnings	31,036	23,864
Treasury stock, at cost; 18,348 shares at June 30, 2018 and at December 31, 2017	(175)	(175)
Total stockholders’ equity	359,229	356,847
Non-controlling interest	14,266	12,144
Total equity	373,495	368,991
Total liabilities and stockholders' equity	$ 447,984	$ 463,913

CONDENSED CONSOLIDATED BALANCE SHEETS (Parentheticals) - $ / shares	Jun. 30, 2018	Dec. 31, 2017
CONDENSED CONSOLIDATED BALANCE SHEETS [Abstract]
Preferred stock par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (in shares)	1	1
Preferred stock, shares outstanding (in shares)	1	1
Common stock par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	225,000,000	225,000,000
Common stock, shares issued (in shares)	44,926,665	43,931,484
Common stock, shares outstanding (in shares)	44,908,317	43,913,136
Treasury stock, shares (in shares)	18,348	18,348

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues
Revenues	$ 43,398	$ 36,857	$ 114,084	$ 95,493
Cost of sales
Cost of product sales, exclusive of depreciation and amortization expense shown below	12,622	15,733	37,325	40,448
Cost of services, exclusive of depreciation and amortization expense shown below	7,290	3,152	16,179	7,791
Total cost of sales, exclusive of depreciation and amortization expense shown below	19,912	18,885	53,504	48,239
Selling, general and administrative expenses	22,125	16,163	43,152	28,935
Depreciation	1,156	678	2,255	1,242
Amortization	3,283	5,973	6,604	11,995
Change in fair value of contingent consideration	213	767	(1,140)	767
(Loss) income from operations	(3,291)	(5,609)	9,709	4,315
Other income (expense)
Interest expense, net	(608)	(2,007)	(1,065)	(3,516)
Other (expense) income, net	(44)	64	40	1,038
Foreign currency exchange gain	106	1,952	289	1,011
Total other (expense) income	(546)	9	(736)	(1,467)
(Loss) income before income tax	(3,837)	(5,600)	8,973	2,848
Income tax (benefit) expense	(1,019)	(855)	(74)	1,245
Net (loss) income	(2,818)	(4,745)	9,047	1,603
Net income (loss) attributable to non-controlling interest	1,235	(254)	2,122	(456)
Net (loss) income attributable to NCS Multistage Holdings, Inc.	$ (4,053)	$ (4,491)	$ 6,925	$ 2,059
(Loss) earnings per common share
Basic (loss) earnings per common share attributable to NCS Multistage Holdings, Inc. (in dollars per share)	$ (0.09)	$ (0.11)	$ 0.15	$ 0.05
Diluted (loss) earnings per common share attributable to NCS Multistage Holdings, Inc. (in dollars per share)	$ (0.09)	$ (0.11)	$ 0.15	$ 0.05
Weighted average common shares outstanding
Basic	44,778,000	40,198,000	44,517,000	37,119,000
Diluted	44,778,000	40,198,000	47,186,000	40,188,000
Product sales [Member]
Revenues
Revenues	$ 27,773	$ 29,397	$ 77,881	$ 74,971
Services [Member]
Revenues
Revenues	$ 15,625	$ 7,460	$ 36,203	$ 20,522

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
Net (loss) income	$ (2,818)	$ (4,745)	$ 9,047	$ 1,603
Foreign currency translation adjustments, net of tax of $0	(4,235)	5,940	(10,924)	7,593
Comprehensive (loss) income	(7,053)	1,195	(1,877)	9,196
Less: Comprehensive income (loss) attributable to non-controlling interest	1,235	(277)	2,122	(456)
Comprehensive (loss) income attributable to NCS Multistage Holdings, Inc.	$ (8,288)	$ 1,472	$ (3,999)	$ 9,652

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parentheticals) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
Foreign currency translation adjustments, tax	$ 0	$ 0	$ 0	$ 0

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Non-controlling Interest [Member]	Total
Beginning balance at Dec. 31, 2016		$ 340	$ 237,566	$ (82,015)	$ 21,762	$ (175)		$ 177,478
Beginning balance, shares at Dec. 31, 2016	1	34,024,326				18,348
Acquisition							$ 12,954	12,954
Share-based compensation			1,836					1,836
Net (loss) income					2,059		(456)	1,603
Issuance of common stock upon IPO, net of offering costs		$ 96	148,841					148,937
Issuance of common stock upon IPO, net of offering costs, shares		9,550,000
Currency translation adjustment				7,593				7,593
Ending balance at Jun. 30, 2017		$ 436	388,243	(74,422)	23,821	$ (175)	12,498	350,401
Ending balance, shares at Jun. 30, 2017	1	43,574,326				18,348
Beginning balance at Dec. 31, 2017		$ 439	399,426	(66,707)	23,864	$ (175)	12,144	368,991
Beginning balance, shares at Dec. 31, 2017	1	43,931,484				18,348
Adoption of ASC 606 at Dec. 31, 2017					247			247
Share-based compensation			5,332					5,332
Net (loss) income					6,925		2,122	9,047
Exercise of stock options		$ 6	796					802
Exercise of stock options, shares		552,869
Cemblend exchangeable shares		$ 4	(4)
Cemblend exchangeable shares, shares		442,312
Currency translation adjustment				(10,924)				(10,924)
Ending balance at Jun. 30, 2018		$ 449	$ 405,550	$ (77,631)	$ 31,036	$ (175)	$ 14,266	$ 373,495
Ending balance, shares at Jun. 30, 2018	1	44,926,665				18,348

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities
Net income	$ 9,047	$ 1,603
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	8,859	13,237
Amortization of deferred loan cost	168	289
Share-based compensation	5,332	1,836
Provision for inventory obsolescence	858
Deferred income tax benefit	(2,185)	(8,577)
Gain on sale of property and equipment	(16)	(44)
Foreign exchange gain on financing item		(1,780)
Write-off of deferred loan costs		1,422
Change in fair value of contingent consideration	(1,140)	767
Changes in operating assets and liabilities:
Accounts receivable—trade	6,753	(3,598)
Inventories	391	(4,866)
Prepaid expenses and other assets	(2,066)	(601)
Accounts payable—trade	1,587	60
Accrued expenses	(1,284)	1,407
Other liabilities	284	(679)
Income taxes receivable/payable	(19,093)	6,564
Net cash provided by operating activities	7,495	7,040
Cash flows from investing activities
Purchases of property and equipment	(3,068)	(3,873)
Purchase and development of software and technology	(714)
Proceeds from sales of property and equipment	232	137
Proceeds from short-term note receivable		1,000
Acquisition of business, net of cash acquired		(5,996)
Net cash used in investing activities	(3,550)	(8,732)
Cash flows from financing activities
Equipment note borrowings		1,533
Payments on equipment note and capital leases	(846)	(80)
Promissory note borrowings	4,884	2,955
Payments on promissory note	(7,749)	(1,216)
Payment of deferred loan cost related to senior secured credit facility		(683)
Payments related to public offering		(2,178)
Proceeds from related party note receivable		752
Repayment of term note		(89,077)
Proceeds from issuance of common stock, net of offering costs		151,356
Proceeds from the exercise of options for common stock	802
Net cash (used in) provided by financing activities	(2,909)	63,362
Effect of exchange rate changes on cash and cash equivalents	(1,368)	46
Net change in cash and cash equivalents	(332)	61,716
Cash and cash equivalents beginning of period	33,809	18,275
Cash and cash equivalents end of period	33,477	79,991
Supplemental cash flow information
Cash paid for income taxes (net of refunds)	20,830	3,297
Noncash investing and financing activities
Assets obtained by entering into capital leases	$ 1,831	$ 43

Basis of Presentation	6 Months Ended
Basis of Presentation	Jun. 30, 2018
Basis of Presentation [Abstract]
Basis of Presentation	Note 1. Basis of Presentation Nature of Business NCS Multistage Holdings, Inc., through its wholly owned subsidiaries and subsidiaries for which we have a controlling voting interest (collectively referred to as the “Company,” “NCS,” “we” or “us”), is primarily engaged in providing engineered products and support services for oil and natural gas well completions and field development strategies. We offer our products and services primarily to exploration and production companies for use in onshore wells. We operate through service facilities principally located in Houston, Midland and Corpus Christi, Texas; Tulsa and Oklahoma City, Oklahoma; and Calgary, Red Deer, Grande Prairie and Estevan, Canada. Basis of Presentation Our accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), issued by the Securities Exchange Commission (“SEC”) and have not been audited by our independent registered public accounting firm. The Condensed Consolidated Balance Sheet at December 31, 2017 is derived from our audited financial statements. However, certain information and footnote disclosures required by GAAP for complete annual financial statements have been omitted or condensed as permitted by the rules and regulations of the SEC, and, therefore, these interim financial statements should be read in conjunction with our audited financial statements included in our Annual Report on Form 10-K filed with the SEC on March 9, 2018. In the opinion of management, these condensed consolidated financial statements, which have been prepared pursuant to the rules of the SEC and GAAP for interim financial reporting, reflect all adjustments, which consisted only of normal recurring adjustments that were necessary for a fair statement of the interim periods presented. The results of operations for interim periods are not necessarily indicative of those for a full year. All intercompany accounts and transactions have been eliminated for purposes of preparing these condensed consolidated financial statements. Summary of New Significant Accounting Policy Intangible Assets Certain costs incurred in the development of internal-use software applications are capitalized and costs incurred outside of the software application development stage are expensed as incurred. The amounts capitalized are included in intangibles, categorized as internally developed software, and will be amortized on a straight-line basis over the estimated useful life of the software, which is five years. We will begin to amortize internal-use software when it is ready for its intended use. Recent Accounting Pronouncements Pronouncements Adopted in 2018 In June 2018, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2018-07, Improvements to Nonemployee Share-Based Payment Accounting (Topic 718). The ASU is intended to reduce the cost and complexity and to improve financial reporting for nonemployee share-based payments. The ASU expands the scope of Topic 718 to include share-based payments issued to nonemployees for goods or services. Consequently, the accounting for share-based payments to nonemployees and employees will be substantially aligned. The ASU is for fiscal years beginning after December 15, 2018, including interim periods within that fiscal year. Early adoption is permitted, but no earlier than an entity’s adoption date of Topic 606, Revenue from Contracts with Customers. We have elected to early adopt this ASU on April 1, 2018. The adoption of this ASU did not have a material impact on our condensed consolidated financial statements. In January 2017, the FASB issued ASU 2017-01, Clarifying the Definition of a Business (Topic 805), to clarify the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions or disposals of assets or businesses. For public entities, this guidance is effective for annual periods beginning after December 15, 2017, including interim periods within those periods. We adopted ASU 2017-01 on January 1, 2018, which did not have a material impact on our condensed consolidated financial statements. In August 2016, the FASB issued ASU 2016-15, Classification of Certain Cash Receipts and Cash Payments (Topic 230). The objective of the guidance is to reduce the existing diversity in practice related to the presentation and classification of certain cash receipts and cash payments. The guidance addresses eight specific cash flow issues including but not limited to, debt prepayment or extinguishment costs, contingent consideration payments made after a business combination, proceeds from the settlement of insurance claims and proceeds from the settlement of corporate-owned life insurance policies. For public entities, the guidance is effective for financial statements issued for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years and is retrospective for all periods presented. Early adoption is permitted including for interim periods. We adopted ASU 2016-15 on January 1, 2018, which did not have a material impact on our condensed consolidated financial statements. In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606). The new standard is effective for annual reporting periods beginning after December 15, 2017 and early adoption is permitted, however, not before fiscal years beginning after December 15, 2016. Subsequent to ASU 2014-09’s issuance, Topic 606 was amended for FASB updates that changed the effective date as well as addressed certain aspects regarding new revenue standards. The comprehensive new standard will supersede existing revenue recognition guidance and require revenue to be recognized when promised goods or services are transferred to customers in amounts that reflect the consideration to which entities expect to be entitled in exchange for those goods or services. Adoption of the new rules could affect the timing of revenue recognition for certain transactions. The guidance permits the use of either a full retrospective or modified retrospective transition method. On January 1, 2018, we adopted ASU 2014-09 and its related amendments (collectively known as Accounting Standards Codification “ASC 606”), using the modified retrospective method. We have concluded that the adoption of this ASU did not have a material impact on our condensed consolidated financial statements. See “Note 2. Revenue” for the required disclosures related to the impact of adopting this standard. Pronouncements Not Yet Effective In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842), which replaces the existing guidance in ASC 840, Leases. Under ASC 842, lessees will need to recognize most leases on their balance sheets as lease liabilities with corresponding right-of-use assets. The new lease standard also changes the definition of a lease and requires expanded quantitative and qualitative disclosures for both lessees and lessors. Entities are required to adopt ASC 842 using a modified retrospective transition method. Certain practical expedients can be applied. The new standard is effective for interim and annual reporting periods beginning after December 15, 2018, with early adoption permitted. We plan to adopt ASC 842 effective January 1, 2019 and are currently assessing the impact of the adoption. During the second quarter of 2018, we put in place a team, including a third-party consultant, to evaluate our current lease contracts and analyze contracts that may contain lease components. While we cannot currently estimate the quantitative effect that ASC 842 will have on our condensed consolidated financial statements, the adoption of ASC 842 will increase our asset and liability balances on the condensed consolidated balance sheets due to the required recognition of right-of-use assets and corresponding lease liabilities for most lease obligations that are currently classified as operating leases.

Revenues

6 Months Ended

Jun. 30, 2018

Revenues [Abstract]

Revenues

Note 2. Revenues

On January 1, 2018, we adopted ASC 606 and elected to use the modified retrospective method for all contracts not completed as of the date of adoption. The reported results for 2018 reflect the application of ASC 606 guidance while the reported results for 2017 were prepared under the guidance of ASC 605, Revenue Recognition. In accordance with ASC 606, revenue is recognized when promised goods or services are transferred to customers in an amount that reflects the consideration to which an entity expects to be entitled for those goods or services if certain criteria are met.

Financial Statement Impact of Adopting ASC 606

The cumulative effect of the changes made to our condensed consolidated balance sheet at January 1, 2018 for the adoption of ASC 606 using the modified retrospective method was as follows (in thousands):

[


	Balance at		Adjustments
	December 31,		due to		Balance at
	2017		ASC 606		January 1, 2018
Assets
Accounts receivable—trade, net	$	47,880	$	313	$	48,193

Liabilities
Income taxes payable	$	10,561	$	66	$	10,627

Equity
Retained earnings	$	23,864	$	247	$	24,111

The following tables compare the reported condensed consolidated balance sheet as of June 30, 2018 and statements of operations for the three and six months ended June 30, 2018, to the balances without the adoption of ASC 606 (in thousands):


	As of June 30, 2018
			Balances		Effect of
			without Adoption		Change
	As Reported		of ASC 606		Higher/(Lower)
Balance Sheet

Assets
Accounts receivable—trade, net	$	40,394	$	40,235	$	159

Liabilities
Income taxes payable	$	129	$	96	$	33

Equity
Retained earnings	$	31,036	$	30,910	$	126


	Three Months Ended June 30, 2018						Six Months Ended June 30, 2018
			Balances		Effect of				Balances		Effect of
			without Adoption		Change				without Adoption		Change
	As Reported		of ASC 606		Higher/(Lower)		As Reported		of ASC 606		Higher/(Lower)
Income Statement

Revenues
Services	$	15,625	$	16,044	$	(419)	$	36,203	$	36,357	$	(154)

Costs and expenses
Income tax (benefit) expense	$	(1,019)	$	(931)	$	(88)	$	(74)	$	(42)	$	(32)
Net income	$	(2,818)	$	(2,487)	$	(331)	$	9,047	$	9,169	$	(122)
Net income attributable to NCS Multistage Holdings, Inc.	$	(4,053)	$	(3,722)	$	(331)	$	6,925	$	7,047	$	(122)

Revenue Recognition

We derive our revenues primarily from highly engineered products and support services. Revenues are based upon a purchase order, contract or other persuasive evidence of an arrangement with the customer that includes a fixed or determinable price, provided that collectability is reasonably assured, but such arrangements do not generally include right of return or other similar provisions or other significant post-delivery obligations. Sales and value added taxes that we collect concurrent with revenue-producing activities are excluded from revenue. We determine revenue recognition through the following steps: (i) identify the contract, (ii) identify the performance obligations, (iii) determine the transaction price, (iv) allocate the transaction price and (v) satisfy the performance obligation.

On occasion, we issue credits to our customers that are related specifically to the performance of our products or the services we provide, with such credits reducing the amount of revenue for that sale or job. Such credits are infrequent, situation-specific and cannot be estimated in advance.

The payment terms and conditions in our customer contracts vary. We do not have contracts that contain a significant financing component and do not accept noncash consideration from customers.

NCS has elected to recognize shipping and handling costs when the title of the product transfers to the customer. These costs are included in cost of sales in our condensed consolidated statements of operations.

Product Sales Revenues

For product sale arrangements that are standard inventory products or modified inventory products with an alternative use, revenue is recognized at a point in time when control transfers. Control generally transfers upon shipment, which is also when risk of loss and title transfers. Customers may also request bill and hold arrangements in writing. Once we have completed the bill and hold order, the products are segregated from the rest of inventory in the warehouse. The products are delivered based on the customer instructions and revenue is recognized when control transfers, which is generally when title is transferred to the customer.

The transaction price for product sales having a performance obligation is the price per unit times the unit quantity ordered and shipped to the customer or consumed at the well site.

Services Revenue

For service arrangements that do not have a contract provision with a right to a payment for services up to the date of termination, revenue is recognized when the job has been completed, which usually includes a customer signature or acknowledgement and when there are no additional services or future obligations required by us. The transaction price is determined by the contract unit day rate times the cumulative number of days of service provided upon the completion of the service and upon customer acceptance.

For service arrangements that do have a contract provision with a right to payment for services up to the date of termination, revenue is recognized over time using a unit rate (labor and materials) output method that corresponds to the value we would receive upon termination of the contract at a reporting period. In applying the output method at the end of a quarter, we check that there is no material work in progress that is not in the measurement of the output. The transaction price for the period end is determined by the contract unit rate times the cumulative number of units earned up to the reporting period less any revenue recognized in prior periods.

Disaggregation of Revenue

We sell our products and services primarily in North America and in selected international markets. Revenue by geography is attributed based on the current billing address of the customer. The following table depicts the disaggregation of revenue by geographic region (in thousands):


	Three Months Ended		Six Months Ended
	June 30,		June 30,
	2018		2018
United States
Product sales	$	16,309	$	29,886
Services		11,396		19,819
Total United States		27,705		49,705
Canada
Product sales		10,740		46,438
Services		3,132		14,609
Total Canada		13,872		61,047
Other Countries
Product sales		724		1,557
Services		1,097		1,775
Total Other Countries		1,821		3,332
Total
Product sales		27,773		77,881
Services		15,625		36,203
Total	$	43,398	$	114,084

Contract Balances

When the timing of the delivery of products and provision of services is different from the timing of the customer payments, we recognize either a contract asset (performance precedes contractual due date in connection with estimates of variable consideration) or a contract liability (customer payment precedes performance) on our condensed consolidated balance sheet. The following table includes the contract assets and liabilities as of June 30, 2018 and January 1, 2018 (in thousands):


	Contract Assets				Contract Liabilities
	Current		Non-Current		Current		Non-Current
Balance at January 1, 2018	$	—	$	—	$	170	$	—
Additions		—		—		301		—
Revenue recognized		—		—		(170)		—
Balance at June 30, 2018	$	—	$	—	$	301	$	—

Our contract liability as of June 30, 2018 is included in current liabilities on our condensed consolidated balance sheet. Our performance obligations for our product and service revenues are usually satisfied before the customer’s payment although prepayments may occasionally be required for international sales.

Contracts with Multiple Performance Obligations

Greater than 99% of our product and service revenues are considered a single performance obligation. Our self-service product line, which is less than one percent of our revenue for the three and six months ended June 30, 2018, is made up of two performance obligations: (i) the delivery of tracer materials to a customer well site and (ii) the creation of diagnostic reports ordered by customers when we do not perform an integrated service. For these contracts, we do not allocate the transaction price as the individual performance obligations are sold at standalone prices in the customer order. The transaction prices for our self-service product line that have two performance obligations are (i) the price per unit times the quantity of tracer materials and (ii) prices charged for diagnostic reports ordered by and delivered to the customer.

Practical Expedients and Exemptions

We generally expense sales commissions when incurred because the amortization period would have been one year or less. These costs are recorded within selling, general and administrative expenses.

We do not disclose the value of unsatisfied performance obligations when the related contract has a duration of one year or less or we recognize revenue equal to what we have the right to invoice when that amount corresponds directly with the value to the customer of our performance to date.

Acquisitions

6 Months Ended

Jun. 30, 2018

Acquisitions [Abstract]

Acquisitions

Note 3. Acquisitions

Spectrum Tracer Services

On August 31, 2017, we acquired 100% of the equity interests in Spectrum Tracer Services, LLC (“Spectrum”) in exchange for approximately $83 million, subject to certain adjustments, which was comprised of (i) approximately $76 million in cash and (ii) 0.4 million shares of our common stock using a fair market value of $19.42 per share. The cash portion was funded with available cash and borrowings under our Senior Secured Credit Facility (as defined below). We believe Spectrum’s tracer diagnostics services offering strengthens our ability to provide our customers with actionable data and analysis to optimize oil and natural gas well completions and field development strategies.

The acquisition of Spectrum includes an earn-out provision that could provide up to $12.5 million in additional cash consideration to Spectrum’s former unitholders if Spectrum’s actual gross profit during the earn-out period that commenced on October 1, 2017 and ends on December 31, 2018 is greater than the earn-out threshold. The fair value of the earn-out recognized on the acquisition date was $0.4 million. We estimated the fair value of the earn-out using a risk-neutral option pricing analysis within a Monte Carlo simulation framework. The earn-out is subject to re-measurement each reporting period using Level 3 inputs until it has been paid. Subsequent changes in the fair value of the liability are reflected in our condensed consolidated statements of operations as a change in fair value of contingent consideration. As of June 30, 2018, the earn-out had a value of $2.0 million, which is included in current contingent consideration on the condensed consolidated balance sheet. As of December 31, 2017, the earn-out had a value of $3.4 million and is included in noncurrent contingent consideration on the condensed consolidated balance sheet. During the three and six months ended June 30, 2018, we recognized a change of $0.1 million and $(1.4) million, respectively, in the estimated fair value of contingent consideration expense in the condensed consolidated statements of operations related to the change in fair value of the Spectrum earn-out. The cash payment, if any, is expected to be paid during the second quarter of 2019.

The following unaudited pro forma summary presents our select financial information as if the acquisition had occurred on January 1, 2016. The below information reflects pro forma adjustments based on available information and certain assumptions we believe are reasonable, including: (i) adjustments related to the depreciation and amortization of the fair value of acquired intangibles and fixed assets, (ii) removal of the historical interest expense of Spectrum as well as the addition of the interest expense of the borrowings under our Senior Secured Credit Facility in connection with the acquisition, (iii) tax effect related to historical U.S. operations and the aforementioned pro forma adjustments, (iv) adjustments related to the number of shares of our common stock outstanding to reflect the 0.4 million shares issued in connection with the acquisition and (v) accounting policy conformity changes. The pro forma condensed combined financial information has been included for comparative purposes and is not necessarily indicative of the results that might have actually occurred had the Spectrum acquisition taken place on January 1, 2016; furthermore, the financial information is not intended to be a projection of future results. The following table summarizes our unaudited selected financial information on a pro forma basis (in thousands, except per share data):


	Pro Forma (Unaudited)
	Three Months Ended		Six Months Ended
	June 30, 2017		June 30, 2017
Revenue	$	44,771	$	108,777
Net (loss) income attributable to NCS Multistage Holdings, Inc.	$	(3,846)	$	3,416
Diluted earnings per share	$	(0.09)	$	0.08

The purchase price is allocated to the estimated fair value of assets acquired and liabilities assumed as of the acquisition date. Goodwill is calculated as the excess of the consideration transferred over the fair value of the net assets recognized. By combining Spectrum’s tracer diagnostics services offering with our existing portfolio of completions products and services, we believe we have an opportunity to increase our revenue through the cross-selling of tracer diagnostics services to current NCS customers and to sell NCS’s completions products and services to current Spectrum customers. This expected synergy gives rise to goodwill being recorded as part of the purchase price of Spectrum. The assets and liabilities of Spectrum have been measured based on various preliminary estimates using assumptions that we believe are reasonable based on information that is currently available. The purchase price allocation is preliminary and adjustments to provisional amounts may occur as we continue to analyze information. We have recognized $40.2 million of goodwill as a result of the transaction of which approximately $6 million will be non-deductible for tax purposes. Additional changes to the purchase price allocation may result in a corresponding change to goodwill in the period of the change as we are currently evaluating the deferred taxes calculation, however, we do not expect such adjustments to materially change the purchase price allocation. We also incurred acquisition costs of $0.3 million and $0.4 million related to this acquisition during the three and six months ended June 30, 2017, respectively, which was included in general and administrative expense on our condensed consolidated statements of operations.

The following table summarizes the consideration and the assets acquired at the Spectrum closing date (in thousands):


Consideration
Cash consideration	$	76,485
Equity consideration		6,907
Earn-out liability recognized		352
Total consideration	$	83,744
Preliminary purchase price allocation
Cash	$	1,326
Accounts receivable		4,648
Inventories		3,761
Other current assets		480
Property and equipment		4,725
Intangible assets		31,900
Other long-term assets		26
Total identifiable assets acquired		46,866
Accounts payable—trade		454
Accrued expenses		436
Income taxes payable		228
Other current liabilities		44
Deferred tax liability		956
Other long-term liabilities		1,191
Total liabilities assumed		3,309
Net identifiable assets acquired		43,557
Goodwill		40,187
Net assets acquired	$	83,744

The amount allocated to intangible assets was attributed to the following categories (in thousands):


			Estimated Useful
	Fair Value		Lives (Years)
Technology	$	5,600	16
Trademarks		1,600	10
Customer relationships		24,700	21
Total intangible assets	$	31,900

These intangible assets are amortized on a straight-line basis, which is presented in amortization in our condensed consolidated statements of operations. Amortization expense for the intangible assets for the Spectrum acquisition was $0.4 million and $0.8 million for the three and six months ended June 30, 2018, respectively.

Repeat Precision

On February 1, 2017, we acquired a 50% interest in Repeat Precision for $6.0 million. Historically, the business has been a supplier to NCS. Our strategic purchase of 50% of this business ensures that we have continued access to these services and allows us greater control of the allocation of their capacity, ensuring that we can scale their operations together with ours. In addition, Repeat Precision also markets composite frac plugs and related products, providing an additional revenue opportunity.

Concurrent with entering into the transaction, the previous owner of the 50% interest repaid a $1.0 million promissory note to us. We also recorded an earn-out at the acquisition date as a contingent adjustment to the purchase price in the amount of $7.0 million. We estimated the fair value of the earn-out using a Monte Carlo simulation on the acquisition date. The earn-out equity value was based on Repeat Precision’s 2018 EBITDA, multiplied by three, which was then reduced by debt and increased by cash. The earn-out equity value was then discounted at the adjusted cost of equity. The earn-out is subject to re-measurement each reporting period using Level 3 inputs until it has been paid. Subsequent changes in the fair value of the liability are reflected in our condensed consolidated statements of operations as a change in fair value of contingent consideration. As of June 30, 2018, the earn-out had a value of $9.7 million, which is included in current contingent consideration on the condensed consolidated balance sheet. As of December 31, 2017, the earn-out had a value of $9.4 million, which is included in noncurrent contingent consideration on the condensed consolidated balance sheet. We recognized $0.1 million and $0.8 million during the three months ended June 30, 2018 and 2017, respectively, in addition to $0.3 million and $0.8 million for the six months ended June 30, 2018 and 2017, respectively, as an increase in fair value of contingent consideration expense in the condensed consolidated statements of operations related to the change in fair value of the earn-out. The cash payment, if any, is expected to be paid during the first quarter of 2019 and will not exceed $10.0 million.

As NCS has the controlling voting interest in Repeat Precision, we determined that the transaction was a business combination and used the acquisition method of accounting and have included Repeat Precision in our condensed consolidated financial statements from the acquisition date. As a result, the other party’s ownership percentage is presented separately as a non-controlling interest.

The purchase price is allocated to the fair value of assets acquired and liabilities assumed as of the acquisition date and goodwill is recognized for the excess consideration transferred over the fair value of the net assets. By combining Repeat Precision’s expertise in providing high-quality machining services with NCS’s engineering capabilities, product development expertise and customer relationships, we believe that we have additional revenue opportunities for NCS to leverage the vertically integrated supply chain by developing and marketing new completions products. This expected synergy gives rise to goodwill being recorded as part of the purchase price of Repeat. The purchase price allocation was finalized during the first quarter of 2018. We have recognized $15.2 million of goodwill as a result of the transaction and expect the full amount to be deductible for tax purposes. We also incurred acquisition costs of $21 thousand and $0.3 million related to this acquisition for the three and six months ended June 30, 2017, respectively, which were included in general and administrative expense on our condensed consolidated statements of operations.

The following table summarizes the consideration and the assets acquired at the Repeat Precision closing date (in thousands):


Consideration
Cash paid by NCS	$	5,996
Earn-out liability recognized		6,958
Total consideration	$	12,954
Preliminary purchase price allocation
Other net assets	$	174
Inventory		662
Property and equipment		5,750
Intangible assets		4,100
Goodwill		15,222
Total assets acquired	$	25,908
Less: non-controlling interest		(12,954)
Net assets acquired	$	12,954

The unaudited pro forma operating results pursuant to ASC 805 related to the Repeat Precision acquisition have been excluded due to immateriality.

In connection with the Repeat Precision acquisition, we acquired intangible assets in the amount of $4.1 million related to customer relationships. The intangible assets are amortized over their estimated ten-year useful lives. Amortization expense for the Repeat Precision acquisition was $0.1 million for each of the three months ended June 30, 2018 and 2017, respectively, and $0.2 million for each of the six months ended June 30, 2018 and 2017, respectively.

Inventories

6 Months Ended

Jun. 30, 2018

Inventories [Abstract]

Inventories

Note 4. Inventories

Inventories consist of the following as of June 30, 2018 and December 31, 2017 (in thousands):


	June 30,		December 31,
	2018		2017
Raw materials	$	2,812	$	2,412
Work in process		746		623
Finished goods		27,433		30,100
Total inventories	$	30,991	$	33,135

Property and Equipment

6 Months Ended

Jun. 30, 2018

Property and Equipment [Abstract]

Property and Equipment

Note 5. Property and Equipment

Property and equipment by major asset class consist of the following as of June 30, 2018 and December 31, 2017 (in thousands):



	June 30,		December 31,
	2018		2017
Land	$	2,071	$	2,167
Building and improvements		4,989		5,155
Machinery and equipment		14,057		13,418
Computers and software		2,093		2,157
Furniture and fixtures		1,042		1,013
Vehicles		6,809		5,751
Service equipment		244		244
		31,305		29,905
Less: Accumulated depreciation and amortization		(8,265)		(7,012)
		23,040		22,893
Construction in progress		2,651		758
Property and equipment, net	$	25,691	$	23,651

Goodwill and Identifiable Intangibles

6 Months Ended

Jun. 30, 2018

Goodwill and Identifiable Intangibles [Abstract]

Goodwill and Identifiable Intangibles

Note 6. Goodwill and Identifiable Intangibles

Changes in the carrying amount of goodwill are as follows (in thousands):



At December 31, 2016	$	122,077
Acquisitions		55,409
Currency translation adjustment		6,992
At December 31, 2017	$	184,478
Currency translation adjustment		(4,959)
At June 30, 2018	$	179,519

Identifiable intangibles by major asset class consist of the following (in thousands):



		June 30, 2018
	Estimated	Gross
	Useful	Carrying		Accumulated		Net
	Lives (Years)	Amount		Amortization		Balance
Technology	14 - 16	$	146,283	$	(56,068)	$	90,215
Trademarks	5 - 10		1,600		(133)		1,467
Customer relationships	10 - 21		40,458		(5,923)		34,535
Internally developed software	5		659		—		659
Total identifiable intangibles		$	189,000	$	(62,124)	$	126,876



		December 31, 2017
	Estimated	Gross
	Useful	Carrying		Accumulated		Net
	Lives (Years)	Amount		Amortization		Balance
Technology	14 - 16	$	151,433	$	(52,730)	$	98,703
Trademarks	5 - 10		2,588		(1,042)		1,546
Customer relationships	10 - 21		41,058		(4,895)		36,163
Total identifiable intangibles		$	195,079	$	(58,667)	$	136,412

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

+ References + Details

Accrued Expenses

6 Months Ended

Jun. 30, 2018

Accrued Expenses [Abstract]

Accrued Expenses

Note 7. Accrued Expenses

Accrued expenses consist of the following as of June 30, 2018 and December 31, 2017 (in thousands):



	June 30,		December 31,
	2018		2017
Accrued payroll and bonus	$	3,999	$	5,167
Property and franchise taxes accrual		200		390
Accrued acquisition related costs		—		25
Accrued other miscellaneous liabilities		1,093		1,091
Total accrued expenses	$	5,292	$	6,673

Debt

6 Months Ended

Jun. 30, 2018

Debt [Abstract]

Debt

Note 8. Debt

Our long-term debt consists of the following as of June 30, 2018 and December 31, 2017 (in thousands):



	June 30,		December 31,
	2018		2017
Senior Secured Credit Facility	$	20,000	$	20,000
Promissory note		448		3,313
Equipment notes		1,133		1,295
Capital leases		3,460		2,428
Total debt		25,041		27,036
Less: current portion		(2,801)		(5,334)
Long-term debt	$	22,240	$	21,702

The estimated fair value of total debt for the periods ended June 30, 2018 and December 31, 2017 was $24.5 million and $26.7 million, respectively. The carrying value of the Senior Secured Credit Facility and the promissory note approximated the fair value of debt as it can be paid at any time. The fair value for the remaining debt was estimated using Level 2 inputs by calculating the sum of the discounted future interest and principal payments through the date of maturity.

Below is a description of our credit agreement and other financing arrangements.

Senior Secured Credit Facility

On May 4, 2017, we entered into an Amended and Restated Credit Agreement (the “Credit Agreement”) with Pioneer Investment, Inc., as borrower (the “U.S. Borrower”), NCS Multistage Inc., as borrower (the “Canadian Borrower”), Pioneer Intermediate, Inc. (together with the Company, the “Parent Guarantors”) and the lenders party thereto, Wells Fargo Bank, National Association as administrative agent in respect of the U.S. Facility (as defined below) and Wells Fargo Bank, National Association, Canadian Branch, as administrative agent in respect of the Canadian Facility (as defined below) (the senior secured revolving credit facilities provided thereunder, the “Senior Secured Credit Facility”). The Credit Agreement amended and restated the prior credit agreement in its entirety. The Senior Secured Credit Facility will mature on May 4, 2020.

The Senior Secured Credit Facility originally consisted of a (i) senior secured revolving credit facility in an aggregate principal amount of $25.0 million made available to the U.S. Borrower (the “U.S. Facility”), of which up to $5.0 million may be made available for letters of credit and up to $5.0 million may be made available for swingline loans and (ii) senior secured revolving credit facility in an aggregate principal amount of $25.0 million made available to the Canadian Borrower (the “Canadian Facility”).

We entered into Amendment No. 1 to the Credit Agreement on August 31, 2017, which increased the loan commitment available to the U.S. Borrower to $50.0 million from $25.0 million under the U.S. Facility. The loan commitment available under the Canadian Facility remained at $25.0 million. On February 16, 2018, we entered into Amendment No. 2 to the Credit Agreement, which amended certain negative covenants contained in the Credit Agreement. As of June 30, 2018 and December 31, 2017, we had $20.0 million in outstanding indebtedness under the U.S. Facility and no outstanding indebtedness under the Canadian Facility. We incurred interest expense related to the Senior Secured Credit Facility of $0.4 million and $0.7 million for the three and six months ended June 30, 2018, respectively.

Borrowings under the U.S. Facility may be made in U.S. dollars, Canadian dollars or Euros and bear interest at a rate equal to the Adjusted Base Rate or Eurocurrency Rate (each as defined in the Credit Agreement), in each case, plus an applicable interest margin as set forth in the Credit Agreement. Borrowings under the Canadian Facility may be made in U.S. dollars or Canadian dollars and bear interest at the Canadian (Cdn) Base Rate, Canadian (U.S.) Base Rate, Eurocurrency Rate or Discount Rate (each as defined in the Credit Agreement), in each case, plus an applicable interest margin as set forth in the Credit Agreement. The Adjusted Base Rate, Canadian (U.S.) Base Rate and Canadian (Cdn) Base Rate applicable margin will be between 2.25% and 3.00% and Eurocurrency Rate applicable margin will be between 3.25% and 4.00%, in each case, depending on the Company’s leverage ratio. The applicable interest rate at June 30, 2018 was 6.25%.

The obligations of the U.S. Borrower under the U.S. Facility are guaranteed by the Parent Guarantors and each of the other existing and future direct and indirect restricted subsidiaries of the Company organized under the laws of the United States (subject to certain exceptions) and are secured by substantially all of the assets of the Parent Guarantors, the U.S. Borrower and such other subsidiary guarantors, in each case, subject to certain exceptions and permitted liens. The obligations of the Canadian Borrower under the Canadian Facility are guaranteed by the Parent Guarantors, the U.S. Borrower and each of the future direct and indirect restricted subsidiaries of the Company organized under the laws of the United States and Canada (subject to certain exceptions) and are secured by substantially all of the assets of the Parent Guarantors, the U.S. Borrower, the Canadian Borrower and such subsidiary guarantors, if any, in each case, subject to certain exceptions and permitted liens.

The Credit Agreement contains financial covenants that require (i) commencing with the fiscal quarter ending June 30, 2017, compliance with a leverage ratio test set at (A) 3.00 to 1.00 as of the last day of each fiscal quarter ending prior to March 31, 2018 and (B) 2.50 to 1.00 as of the last day of each fiscal quarter ending on or after March 31, 2018, (ii) commencing with the fiscal quarter ending June 30, 2017, compliance with an interest coverage ratio test set at 2.75 to 1.00 as of the last day of each fiscal quarter, (iii) if the leverage ratio as of the end of any fiscal quarter is greater than 2.00 to 1.00 and the amount outstanding under the Canadian Facility at any time during such fiscal quarter was greater than $0, compliance as of the end of such fiscal quarter with a Canadian asset coverage ratio test set at 1.00 to 1.00 and (iv) if the leverage ratio as of the end of any fiscal quarter is greater than 2.00 to 1.00 and the amount outstanding under the U.S. Facility at any time during such fiscal quarter was greater than $0, compliance as of the end of such fiscal quarter with a U.S. asset coverage ratio test set at 1.00 to 1.00. As of June 30, 2018, we were in compliance with these financial covenants. The Credit Agreement also contains customary affirmative and negative covenants, including, among other things, restrictions on the creation of liens, the incurrence of indebtedness, investments, dividends and other restricted payments, dispositions and transactions with affiliates. The Credit Agreement also includes customary events of default for facilities of this type (with customary grace periods, as applicable). If an event of default occurs, the lenders under each of the U.S. Facility and the Canadian Facility may elect (after the expiration of any applicable notice or grace periods) to declare all outstanding borrowings under such facility, together with accrued and unpaid interest and other amounts payable thereunder, to be immediately due and payable. The lenders under each of the U.S. Facility and the Canadian Facility also have the right upon an event of default thereunder to terminate any commitments they have to provide further borrowings under such facility. Further, following an event of default under each of the U.S. Facility and the Canadian Facility, the lenders thereunder will have the right to proceed against the collateral granted to them to secure such facility.

Direct costs of $1.0 million were incurred in connection with the Senior Secured Credit Facility. The costs were capitalized as an asset as they represent the benefit of being able to access capital over the contractual term. The costs are being amortized over the term of the Senior Secured Credit Facility using the straight-line method. Amortization expense of the deferred financing charges of $0.1 million and $0.2 million was included in interest expense, net for the three and six months ended June 30, 2018, respectively.

Promissory Note

On February 27, 2017, Repeat Precision entered into a promissory note with Security State Bank & Trust, Fredericksburg, for an aggregate borrowing capacity of $3.8 million. The promissory note is secured against equipment, inventory and receivables. It bears interest at a variable interest rate based on prime plus 1.00%. Any principal amount not paid by the maturity date bears interest at the lesser of the maximum rate allowed per law or 18.00% per annum. The promissory note was renewed on February 16, 2018 for an aggregate borrowing capacity of $4.3 million and is scheduled to mature on February 16, 2019. No other terms were changed. As of June 30, 2018 and December 31, 2017, the outstanding balance on the promissory note was $0.4 million and $3.3 million, respectively.

Equipment Notes

In February 2017, Repeat Precision entered into an equipment note in the amount of $0.8 million with Security State Bank & Trust, Fredericksburg. The equipment note bears interest at prime plus 1.00%, matures on February 27, 2021 and is collateralized by certain property. Any principal amount not paid by the maturity date bears interest at the lesser of the maximum rate allowed per law or 18.00% per annum. As of June 30, 2018 and December 31, 2017, the outstanding balance on the equipment note was $0.5 million and $0.6 million, respectively.

In April 2017, Repeat Precision entered into another equipment note in the amount of $0.8 million with Security State Bank & Trust, Fredericksburg. The equipment note bears interest at prime plus 1.00%, matures on December 21, 2018 and is collateralized by certain property. Any principal amount not paid by the maturity date bears interest at the lesser of the maximum rate allowed per law or 18.00% per annum. As of June 30, 2018 and December 31, 2017, the outstanding balance on the equipment note was $0.6 million and $0.7 million, respectively.

Commitments and Contingencies	6 Months Ended
Commitments and Contingencies	Jun. 30, 2018
Commitments and Contingencies [Abstract]
Commitments and Contingencies	Note 9. Commitments and Contingencies Litigation In the ordinary course of our business, from time to time, we have various claims, lawsuits and administrative proceedings that are pending or threatened with respect to commercial, intellectual property and employee matters. On July 24, 2018, we filed a patent infringement lawsuit against Kobold Corporation, Kobold Completions Inc. and 2039974 Alberta Ltd. (“Kobold”) in the Federal Court of Canada, alleging that Kobold’s fracturing tools and methods infringe on several of our Canadian patents. We previously filed a breach of contract lawsuit on March 16, 2018, against Kobold Corporation in the Court of Queen’s Bench of Alberta, alleging breach of a prior settlement agreement. Both of these lawsuits seek unspecified monetary damages and injunctive relief. While the outcome of any legal proceedings cannot be predicted with any certainty, based on a consideration of relevant facts and circumstances, our management currently does not expect that the results of these legal proceedings would have a material adverse effect on our financial position, results of operations or cash flows. On March 3, 2017, we received $0.9 million resulting from an arbitration case that was decided in our favor in February 2017. This was recorded as other income, net in our condensed consolidated statements of operations for the six months ended June 30, 2017.

Stockholders' Equity	6 Months Ended
Stockholders' Equity	Jun. 30, 2018
Stockholders' Equity [Abstract]
Stockholders' Equity	Note 10. Stockholders’ Equity The holders of common stock are entitled to one vote for each share of common stock held. The holder, Cemblend Systems, Inc. (“Cemblend”), of the one share of preferred stock, designated as the “Special Voting Share” in our amended and restated certificate of incorporation, is entitled to vote on all matters that a holder of common stock is entitled to vote on and is entitled to cast a number of votes equal to the number of exchangeable shares of NCS Multistage, Inc. (“NCS Canada”), a subsidiary of the Company, then outstanding that are not owned by us, multiplied by the exchange ratio (as defined in the articles of incorporation of NCS Canada), which was adjusted from one to three in April 2017 in connection with our stock split. As of June 30, 2018 and December 31, 2017, one share of preferred stock was issued and outstanding. As of December 31, 2017, the number of shares of common stock issuable for the exchangeable shares totaled 1,769,247 and was held by Cemblend. On February 14, 2018, we issued 442,312 shares of common stock to Cemblend in exchange for shares of NCS Canada. As of June 30, 2018, the number of shares of common stock issuable for the exchangeable shares totaled 1,326,935. The exchangeable shares are convertible upon demand at the stock price on the conversion date. The holders of common stock are entitled to receive dividends as declared from time-to-time by our board of directors. The holder of the Special Voting Share is not entitled to receive dividends. No dividends were declared during the periods ended June 30, 2018 or December 31, 2017.

Share-Based Compensation	6 Months Ended
Share-Based Compensation	Jun. 30, 2018
Share-Based Compensation [Abstract]
Share-Based Compensation	Note 11. Share-Based Compensation During the first quarter of 2018, we granted 582,184 restricted stock units (“RSUs”) at a weighted average grant date fair value of $14.54. Of the RSUs granted, 536,014 will vest and settle ratably over three years on each anniversary of the date of grant and 46,170, which were granted to the non-employee members of the Board of Directors, will vest on the one year anniversary of the grant date. The RSUs for the members of the Board of Directors settle for shares of common stock on a one-for-one basis within thirty days following the earliest of (i) one year following the termination of the person’s service for any reason other than cause, (ii) a change of control or (iii) the fifth anniversary of the grant date. During the first quarter of 2018, we also granted 156,516 of performance stock unit awards (“PSUs”) with a performance period from January 1, 2018 to December 31, 2020. The fair value of the PSUs of $17.37 was measured using a Monte Carlo simulation on the date the PSUs were granted. The number of PSUs ultimately issued under the program is dependent upon our total shareholder return relative to our performance peer group over a three-year performance period. In no event shall the participant earn more than 200% of the target PSUs. If the actual performance falls below the predefined target, the number of shares vested is reduced. If the actual performance falls below the threshold performance level, no PSUs will vest. The total share-based compensation expense for all awards was $3.0 million and $1.5 million for the three months ended June 30, 2018 and 2017, respectively, and $5.3 million and $1.8 million for the six months ended June 30, 2018 and 2017, respectively.

Income Taxes	6 Months Ended
Income Taxes	Jun. 30, 2018
Income Taxes [Abstract]
Income Taxes	Note 12. Income Taxes The computation of the annual expected effective tax rate at each interim period requires certain estimates and assumptions including, but not limited to, the expected operating income (or loss) for the year, projections of the proportion of income (or loss) earned and taxed in foreign jurisdictions, permanent and temporary differences and the likelihood of recovering deferred tax assets generated in the current year. The accounting estimates used to compute the provision for income taxes may change as new events occur, more experience is acquired or additional information is obtained. The computation of the annual effective rate would include applicable modifications, which were projected for the year, such as certain book expenses not deductible for tax, tax credits and foreign deemed dividends. We recorded a tax (benefit) of $(1.0) million and $(0.9) million for the three months ended June 30, 2018 and 2017, respectively. For the three months ended June 30, 2018 and 2017, our effective tax rates were (26.6)% and (15.3)%, respectively. For the six months ended June 30, 2018 and 2017, we recorded a tax (benefit) expense of $(0.1) million and $1.2 million, respectively. The effective tax rates for the six months ended June 30, 2018 and 2017 were (0.8)% and 43.7%, respectively. The income tax expense and effective tax rate for the three and six months ended June 30, 2018 were significantly impacted by the U.S. Tax Cuts and Jobs Act of 2017 (the “2017 Tax Act”) including administrative guidance issued by the Internal Revenue Service on April 2, 2018. This guidance along with other updates resulted in a change to the calculation of the mandatory one-time tax on accumulated earnings of foreign subsidiaries in 2017 and a tax benefit of $0.5 million and $2.6 million for the three and six months ended June 30, 2018, respectively, was recorded in tax expense with a corresponding reduction in the effective tax rate of 13.1% and 29.1%, respectively. Additionally, the effective tax rate for the six months ended June 30, 2018 included a tax benefit of $0.3 million for the tax effect of exercised stock option awards. The 2017 Tax Act was signed into law on December 22, 2017. The 2017 Tax Act significantly revised the U.S. corporate income tax by, among other things, lowering the statutory corporate tax rate from 35% to 21%, eliminating certain deductions, imposing a mandatory one-time tax on accumulated earnings of foreign subsidiaries as of 2017, introducing new tax regimes, and changing how foreign earnings are subject to U.S. tax. Our preliminary estimate of the 2017 Tax Act and the remeasurement of our deferred tax assets and liabilities is subject to the finalization of management’s analysis related to certain matters, such as developing interpretations of the provisions of the 2017 Tax Act, changes to certain estimates and the filing of our tax returns. U.S. Treasury regulations, administrative interpretations or court decisions interpreting the 2017 Tax Act may require further adjustments and changes in our estimates. The final determination of the impact of the 2017 Tax Act and the remeasurement of our deferred assets and liabilities will be completed as additional information becomes available, but no later than one year from the enactment of the 2017 Tax Act in accordance with SAB 118. Those adjustments may impact our provision for income taxes in the period in which the adjustments are made. For our calendar year beginning in 2018 we are subject to several provisions of the 2017 Tax Act including computations under Global Intangible Low Taxed Income (“GILTI”) and Foreign Derived Intangible Income (“FDII”). We were able to make a reasonable estimate of the impact of each provision of the 2017 Tax Act on our effective tax rate for the three and six months ended June 30, 2018. We will continue to refine our provisional estimates for our computations under the GILTI and FDII rules as we gather additional information. ASC 740 clarifies the accounting for uncertainty in income taxes recognized in an enterprise’s financial statements. The impact of an uncertain income tax position on the income tax returns must be recognized at the largest amount that is more-likely-than-not to be required to be recognized upon audit by the relevant taxing authority. This standard also provides guidance on de-recognition, measurement, classification, interest and penalties, accounting for interim periods, disclosure and transition issues with respect to tax positions. We include interest and penalties as a component of other income, net in the condensed consolidated statements of operations and recognized $46 thousand and $2 thousand for the six months ended June 30, 2018 and 2017, respectively.

(Loss) Earnings Per Common Share

6 Months Ended

Jun. 30, 2018

(Loss) Earnings Per Common Share [Abstract]

(Loss) Earnings Per Common Share

Note 13. (Loss) Earnings Per Common Share

The following table presents the reconciliation of the numerator and denominator for calculating (loss) earnings per common share from net (loss) income (in thousands, except per share data):



	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2018		2017		2018		2017
Numerator—Basic
Net (loss) income	$	(2,818)	$	(4,745)	$	9,047	$	1,603
Less: income attributable to participating shares		—		—		282		74
Less: income (loss) attributable to non-controlling interest		1,235		(254)		2,122		(456)
Net (loss) income attributable to NCS Multistage Holdings, Inc.––Basic	$	(4,053)	$	(4,491)	$	6,643	$	1,985

Numerator—Diluted
Net (loss) income	$	(2,818)	$	(4,745)	$	9,047	$	1,603
Less: income (loss) attributable to non-controlling interest		1,235		(254)		2,122		(456)
Net (loss) income attributable to NCS Multistage Holdings, Inc.––Diluted	$	(4,053)	$	(4,491)	$	6,925	$	2,059

Denominator
Basic weighted average number of shares		44,778		40,198		44,517		37,119
Exchangeable shares for common stock		—		—		1,434		1,803
Dilutive effect of stock options, RSUs, PSUs and ESPP		—		—		1,235		1,266
Diluted weighted average number of shares		44,778		40,198		47,186		40,188

(Loss) earnings per common share
Basic	$	(0.09)	$	(0.11)	$	0.15	$	0.05
Diluted	$	(0.09)	$	(0.11)	$	0.15	$	0.05

Potentially dilutive securities excluded as anti-dilutive		5,040		3,307		231		-

Segment and Geographic Information	6 Months Ended
Segment and Geographic Information	Jun. 30, 2018
Segment and Geographic Information [Abstract]
Segment and Geographic Information	Note 14. Segment and Geographic Information We have determined that we operate in one reportable segment that has been identified based on how our chief operating decision maker manages our business.

Basis of Presentation (Policy)	6 Months Ended
Basis of Presentation (Policy)	Jun. 30, 2018
Basis of Presentation [Abstract]
Nature of Business	Nature of Business NCS Multistage Holdings, Inc., through its wholly owned subsidiaries and subsidiaries for which we have a controlling voting interest (collectively referred to as the “Company,” “NCS,” “we” or “us”), is primarily engaged in providing engineered products and support services for oil and natural gas well completions and field development strategies. We offer our products and services primarily to exploration and production companies for use in onshore wells. We operate through service facilities principally located in Houston, Midland and Corpus Christi, Texas; Tulsa and Oklahoma City, Oklahoma; and Calgary, Red Deer, Grande Prairie and Estevan, Canada.
Basis of Presentation	Basis of Presentation Our accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), issued by the Securities Exchange Commission (“SEC”) and have not been audited by our independent registered public accounting firm. The Condensed Consolidated Balance Sheet at December 31, 2017 is derived from our audited financial statements. However, certain information and footnote disclosures required by GAAP for complete annual financial statements have been omitted or condensed as permitted by the rules and regulations of the SEC, and, therefore, these interim financial statements should be read in conjunction with our audited financial statements included in our Annual Report on Form 10-K filed with the SEC on March 9, 2018. In the opinion of management, these condensed consolidated financial statements, which have been prepared pursuant to the rules of the SEC and GAAP for interim financial reporting, reflect all adjustments, which consisted only of normal recurring adjustments that were necessary for a fair statement of the interim periods presented. The results of operations for interim periods are not necessarily indicative of those for a full year. All intercompany accounts and transactions have been eliminated for purposes of preparing these condensed consolidated financial statements.
Intangible Assets	Intangible Assets Certain costs incurred in the development of internal-use software applications are capitalized and costs incurred outside of the software application development stage are expensed as incurred. The amounts capitalized are included in intangibles, categorized as internally developed software, and will be amortized on a straight-line basis over the estimated useful life of the software, which is five years. We will begin to amortize internal-use software when it is ready for its intended use.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Pronouncements Adopted in 2018 In June 2018, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2018-07, Improvements to Nonemployee Share-Based Payment Accounting (Topic 718). The ASU is intended to reduce the cost and complexity and to improve financial reporting for nonemployee share-based payments. The ASU expands the scope of Topic 718 to include share-based payments issued to nonemployees for goods or services. Consequently, the accounting for share-based payments to nonemployees and employees will be substantially aligned. The ASU is for fiscal years beginning after December 15, 2018, including interim periods within that fiscal year. Early adoption is permitted, but no earlier than an entity’s adoption date of Topic 606, Revenue from Contracts with Customers. We have elected to early adopt this ASU on April 1, 2018. The adoption of this ASU did not have a material impact on our condensed consolidated financial statements. In January 2017, the FASB issued ASU 2017-01, Clarifying the Definition of a Business (Topic 805), to clarify the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions or disposals of assets or businesses. For public entities, this guidance is effective for annual periods beginning after December 15, 2017, including interim periods within those periods. We adopted ASU 2017-01 on January 1, 2018, which did not have a material impact on our condensed consolidated financial statements. In August 2016, the FASB issued ASU 2016-15, Classification of Certain Cash Receipts and Cash Payments (Topic 230). The objective of the guidance is to reduce the existing diversity in practice related to the presentation and classification of certain cash receipts and cash payments. The guidance addresses eight specific cash flow issues including but not limited to, debt prepayment or extinguishment costs, contingent consideration payments made after a business combination, proceeds from the settlement of insurance claims and proceeds from the settlement of corporate-owned life insurance policies. For public entities, the guidance is effective for financial statements issued for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years and is retrospective for all periods presented. Early adoption is permitted including for interim periods. We adopted ASU 2016-15 on January 1, 2018, which did not have a material impact on our condensed consolidated financial statements. In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606). The new standard is effective for annual reporting periods beginning after December 15, 2017 and early adoption is permitted, however, not before fiscal years beginning after December 15, 2016. Subsequent to ASU 2014-09’s issuance, Topic 606 was amended for FASB updates that changed the effective date as well as addressed certain aspects regarding new revenue standards. The comprehensive new standard will supersede existing revenue recognition guidance and require revenue to be recognized when promised goods or services are transferred to customers in amounts that reflect the consideration to which entities expect to be entitled in exchange for those goods or services. Adoption of the new rules could affect the timing of revenue recognition for certain transactions. The guidance permits the use of either a full retrospective or modified retrospective transition method. On January 1, 2018, we adopted ASU 2014-09 and its related amendments (collectively known as Accounting Standards Codification “ASC 606”), using the modified retrospective method. We have concluded that the adoption of this ASU did not have a material impact on our condensed consolidated financial statements. See “Note 2. Revenue” for the required disclosures related to the impact of adopting this standard. Pronouncements Not Yet Effective In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842), which replaces the existing guidance in ASC 840, Leases. Under ASC 842, lessees will need to recognize most leases on their balance sheets as lease liabilities with corresponding right-of-use assets. The new lease standard also changes the definition of a lease and requires expanded quantitative and qualitative disclosures for both lessees and lessors. Entities are required to adopt ASC 842 using a modified retrospective transition method. Certain practical expedients can be applied. The new standard is effective for interim and annual reporting periods beginning after December 15, 2018, with early adoption permitted. We plan to adopt ASC 842 effective January 1, 2019 and are currently assessing the impact of the adoption. During the second quarter of 2018, we put in place a team, including a third-party consultant, to evaluate our current lease contracts and analyze contracts that may contain lease components. While we cannot currently estimate the quantitative effect that ASC 842 will have on our condensed consolidated financial statements, the adoption of ASC 842 will increase our asset and liability balances on the condensed consolidated balance sheets due to the required recognition of right-of-use assets and corresponding lease liabilities for most lease obligations that are currently classified as operating leases.

Revenues (Tables)

6 Months Ended

Jun. 30, 2018

Revenues [Abstract]

Financial Statement Impact of Adopting ASC 606


	Balance at		Adjustments
	December 31,		due to		Balance at
	2017		ASC 606		January 1, 2018
Assets
Accounts receivable—trade, net	$	47,880	$	313	$	48,193

Liabilities
Income taxes payable	$	10,561	$	66	$	10,627

Equity
Retained earnings	$	23,864	$	247	$	24,111


	As of June 30, 2018
			Balances		Effect of
			without Adoption		Change
	As Reported		of ASC 606		Higher/(Lower)
Balance Sheet

Assets
Accounts receivable—trade, net	$	40,394	$	40,235	$	159

Liabilities
Income taxes payable	$	129	$	96	$	33

Equity
Retained earnings	$	31,036	$	30,910	$	126


	Three Months Ended June 30, 2018						Six Months Ended June 30, 2018
			Balances		Effect of				Balances		Effect of
			without Adoption		Change				without Adoption		Change
	As Reported		of ASC 606		Higher/(Lower)		As Reported		of ASC 606		Higher/(Lower)
Income Statement

Revenues
Services	$	15,625	$	16,044	$	(419)	$	36,203	$	36,357	$	(154)

Costs and expenses
Income tax (benefit) expense	$	(1,019)	$	(931)	$	(88)	$	(74)	$	(42)	$	(32)
Net income	$	(2,818)	$	(2,487)	$	(331)	$	9,047	$	9,169	$	(122)
Net income attributable to NCS Multistage Holdings, Inc.	$	(4,053)	$	(3,722)	$	(331)	$	6,925	$	7,047	$	(122)

Disaggregation of Revenue by Geographic Region


	Three Months Ended		Six Months Ended
	June 30,		June 30,
	2018		2018
United States
Product sales	$	16,309	$	29,886
Services		11,396		19,819
Total United States		27,705		49,705
Canada
Product sales		10,740		46,438
Services		3,132		14,609
Total Canada		13,872		61,047
Other Countries
Product sales		724		1,557
Services		1,097		1,775
Total Other Countries		1,821		3,332
Total
Product sales		27,773		77,881
Services		15,625		36,203
Total	$	43,398	$	114,084

Schedule of Contract Assets and Liabilities


	Contract Assets				Contract Liabilities
	Current		Non-Current		Current		Non-Current
Balance at January 1, 2018	$	—	$	—	$	170	$	—
Additions		—		—		301		—
Revenue recognized		—		—		(170)		—
Balance at June 30, 2018	$	—	$	—	$	301	$	—

Acquisitions (Tables)

6 Months Ended

Jun. 30, 2018

Spectrum Tracer Services [Member]

Summary of Selected Financial Information on Pro Forma Basis


	Pro Forma (Unaudited)
	Three Months Ended		Six Months Ended
	June 30, 2017		June 30, 2017
Revenue	$	44,771	$	108,777
Net (loss) income attributable to NCS Multistage Holdings, Inc.	$	(3,846)	$	3,416
Diluted earnings per share	$	(0.09)	$	0.08

Summary of Consideration and Assets Acquired


Consideration
Cash consideration	$	76,485
Equity consideration		6,907
Earn-out liability recognized		352
Total consideration	$	83,744
Preliminary purchase price allocation
Cash	$	1,326
Accounts receivable		4,648
Inventories		3,761
Other current assets		480
Property and equipment		4,725
Intangible assets		31,900
Other long-term assets		26
Total identifiable assets acquired		46,866
Accounts payable—trade		454
Accrued expenses		436
Income taxes payable		228
Other current liabilities		44
Deferred tax liability		956
Other long-term liabilities		1,191
Total liabilities assumed		3,309
Net identifiable assets acquired		43,557
Goodwill		40,187
Net assets acquired	$	83,744

Schedule of Amount Allocated to Intangible Assets


			Estimated Useful
	Fair Value		Lives (Years)
Technology	$	5,600	16
Trademarks		1,600	10
Customer relationships		24,700	21
Total intangible assets	$	31,900

Repeat Precision [Member]

Summary of Consideration and Assets Acquired


Consideration
Cash paid by NCS	$	5,996
Earn-out liability recognized		6,958
Total consideration	$	12,954
Preliminary purchase price allocation
Other net assets	$	174
Inventory		662
Property and equipment		5,750
Intangible assets		4,100
Goodwill		15,222
Total assets acquired	$	25,908
Less: non-controlling interest		(12,954)
Net assets acquired	$	12,954

Inventories (Tables)

6 Months Ended

Jun. 30, 2018

Inventories [Abstract]

Schedule of Inventories


	June 30,		December 31,
	2018		2017
Raw materials	$	2,812	$	2,412
Work in process		746		623
Finished goods		27,433		30,100
Total inventories	$	30,991	$	33,135

Property and Equipment (Tables)

6 Months Ended

Jun. 30, 2018

Property and Equipment [Abstract]

Schedule of Property and Equipment by Major Asset Class



	June 30,		December 31,
	2018		2017
Land	$	2,071	$	2,167
Building and improvements		4,989		5,155
Machinery and equipment		14,057		13,418
Computers and software		2,093		2,157
Furniture and fixtures		1,042		1,013
Vehicles		6,809		5,751
Service equipment		244		244
		31,305		29,905
Less: Accumulated depreciation and amortization		(8,265)		(7,012)
		23,040		22,893
Construction in progress		2,651		758
Property and equipment, net	$	25,691	$	23,651

Goodwill and Identifiable Intangibles (Tables)

6 Months Ended

Jun. 30, 2018

Goodwill and Identifiable Intangibles [Abstract]

Changes in Carrying Amount of Goodwill



At December 31, 2016	$	122,077
Acquisitions		55,409
Currency translation adjustment		6,992
At December 31, 2017	$	184,478
Currency translation adjustment		(4,959)
At June 30, 2018	$	179,519

Schedule of Identifiable Intangibles



		June 30, 2018
	Estimated	Gross
	Useful	Carrying		Accumulated		Net
	Lives (Years)	Amount		Amortization		Balance
Technology	14 - 16	$	146,283	$	(56,068)	$	90,215
Trademarks	5 - 10		1,600		(133)		1,467
Customer relationships	10 - 21		40,458		(5,923)		34,535
Internally developed software	5		659		—		659
Total identifiable intangibles		$	189,000	$	(62,124)	$	126,876



		December 31, 2017
	Estimated	Gross
	Useful	Carrying		Accumulated		Net
	Lives (Years)	Amount		Amortization		Balance
Technology	14 - 16	$	151,433	$	(52,730)	$	98,703
Trademarks	5 - 10		2,588		(1,042)		1,546
Customer relationships	10 - 21		41,058		(4,895)		36,163
Total identifiable intangibles		$	195,079	$	(58,667)	$	136,412

Accrued Expenses (Tables)

6 Months Ended

Jun. 30, 2018

Accrued Expenses [Abstract]

Schedule of Accrued Expenses



	June 30,		December 31,
	2018		2017
Accrued payroll and bonus	$	3,999	$	5,167
Property and franchise taxes accrual		200		390
Accrued acquisition related costs		—		25
Accrued other miscellaneous liabilities		1,093		1,091
Total accrued expenses	$	5,292	$	6,673

Debt (Tables)

6 Months Ended

Jun. 30, 2018

Debt [Abstract]

Schedule of Long-term Debt



	June 30,		December 31,
	2018		2017
Senior Secured Credit Facility	$	20,000	$	20,000
Promissory note		448		3,313
Equipment notes		1,133		1,295
Capital leases		3,460		2,428
Total debt		25,041		27,036
Less: current portion		(2,801)		(5,334)
Long-term debt	$	22,240	$	21,702

(Loss) Earnings Per Common Share (Tables)

6 Months Ended

Jun. 30, 2018

(Loss) Earnings Per Common Share [Abstract]

Reconciliation of Numerator and Denominator for Calculating (Loss) Earnings Per Share from Net (Loss) Income



	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2018		2017		2018		2017
Numerator—Basic
Net (loss) income	$	(2,818)	$	(4,745)	$	9,047	$	1,603
Less: income attributable to participating shares		—		—		282		74
Less: income (loss) attributable to non-controlling interest		1,235		(254)		2,122		(456)
Net (loss) income attributable to NCS Multistage Holdings, Inc.––Basic	$	(4,053)	$	(4,491)	$	6,643	$	1,985

Numerator—Diluted
Net (loss) income	$	(2,818)	$	(4,745)	$	9,047	$	1,603
Less: income (loss) attributable to non-controlling interest		1,235		(254)		2,122		(456)
Net (loss) income attributable to NCS Multistage Holdings, Inc.––Diluted	$	(4,053)	$	(4,491)	$	6,925	$	2,059

Denominator
Basic weighted average number of shares		44,778		40,198		44,517		37,119
Exchangeable shares for common stock		—		—		1,434		1,803
Dilutive effect of stock options, RSUs, PSUs and ESPP		—		—		1,235		1,266
Diluted weighted average number of shares		44,778		40,198		47,186		40,188

(Loss) earnings per common share
Basic	$	(0.09)	$	(0.11)	$	0.15	$	0.05
Diluted	$	(0.09)	$	(0.11)	$	0.15	$	0.05

Potentially dilutive securities excluded as anti-dilutive		5,040		3,307		231		-

Basis of Presentation (Narrative) (Details)	6 Months Ended
Basis of Presentation (Narrative) (Details)	Jun. 30, 2018
Internally Developed Software [Member]
Estimated useful lives	5 years

Revenues (Narrative) (Details) - item	3 Months Ended	6 Months Ended
Revenues (Narrative) (Details) - item	Jun. 30, 2018	Jun. 30, 2018
Revenues [Abstract]
Percentage of product and service revenues single performance obligation		99.00%
Percentage of self-service product line revenues performance obligation	1.00%	1.00%
Number of performance obligations in product and service revenue		1
Number of performance obligations in self-service product line revenue		2
Revenue performance obligation product and services description		Greater than 99% of our product and service revenues are considered a single performance obligation. Our self-service product line, which is less than one percent of our revenue for the three and six months ended June 30, 2018, is made up of two performance obligations: (i) the delivery of tracer materials to a customer well site and (ii) the creation of diagnostic reports ordered by customers when we do not perform an integrated service.

Revenues (Financial Statement Impact of Adopting ASC 606) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Jan. 01, 2018	Dec. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Accounts receivable - trade, net	$ 40,394		$ 40,394		$ 48,193	$ 47,880
Income taxes payable	129		129		10,627	10,561
Retained earnings	31,036		31,036		24,111	$ 23,864
Revenues	43,398	$ 36,857	114,084	$ 95,493
Income tax (benefit) expense	(1,019)	(855)	(74)	1,245
Net income	(2,818)	(4,745)	9,047	1,603
Net (loss) income attributable to NCS Multistage Holdings, Inc.—Diluted	(4,053)	(4,491)	6,925	2,059
Balances Without Adoption of ASC 606 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Accounts receivable - trade, net	40,235		40,235
Income taxes payable	96		96
Retained earnings	30,910		30,910
Income tax (benefit) expense	(931)		(42)
Net income	(2,487)		9,169
Net (loss) income attributable to NCS Multistage Holdings, Inc.—Diluted	(3,722)		7,047
Effect of Change Higher/(Lower) [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Income tax (benefit) expense			(32)
Net income			(122)
Net (loss) income attributable to NCS Multistage Holdings, Inc.—Diluted			(122)
Adjustments due to ASC 606 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Accounts receivable - trade, net					313
Income taxes payable					66
Retained earnings					$ 247
Adjustments due to ASC 606 [Member] \| Effect of Change Higher/(Lower) [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Accounts receivable - trade, net	159		159
Income taxes payable	33		33
Retained earnings	126		126
Income tax (benefit) expense	(88)
Net income	(331)
Net (loss) income attributable to NCS Multistage Holdings, Inc.—Diluted	(331)
Services [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	15,625	$ 7,460	36,203	$ 20,522
Services [Member] \| Balances Without Adoption of ASC 606 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	16,044		36,357
Services [Member] \| Effect of Change Higher/(Lower) [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues			$ (154)
Services [Member] \| Adjustments due to ASC 606 [Member] \| Effect of Change Higher/(Lower) [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	$ (419)

Revenues (Disaggregation of Revenue by Geographic Region) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Disaggregation of Revenue [Line Items]
Revenues	$ 43,398	$ 36,857	$ 114,084	$ 95,493
Product sales [Member]
Disaggregation of Revenue [Line Items]
Revenues	27,773	29,397	77,881	74,971
Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	15,625	$ 7,460	36,203	$ 20,522
United States [Member]
Disaggregation of Revenue [Line Items]
Revenues	27,705		49,705
United States [Member] \| Product sales [Member]
Disaggregation of Revenue [Line Items]
Revenues	16,309		29,886
United States [Member] \| Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	11,396		19,819
Canada [Member]
Disaggregation of Revenue [Line Items]
Revenues	13,872		61,047
Canada [Member] \| Product sales [Member]
Disaggregation of Revenue [Line Items]
Revenues	10,740		46,438
Canada [Member] \| Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	3,132		14,609
Other Countries [Member]
Disaggregation of Revenue [Line Items]
Revenues	1,821		3,332
Other Countries [Member] \| Product sales [Member]
Disaggregation of Revenue [Line Items]
Revenues	724		1,557
Other Countries [Member] \| Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 1,097		$ 1,775

Revenues (Schedule of Contract Assets and Liabilities) (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2018 USD ($)
Change in Contract with Customer, Asset and Liability [Abstract]
Contract Liabilities Current Balance at January 1, 2018	$ 170
Additions	301
Revenue recognized	(170)
Contract Liabilities Current Balance at June 30, 2018	$ 301

Acquisition (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions			3 Months Ended		6 Months Ended		12 Months Ended
	Aug. 31, 2017	Feb. 01, 2017	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Business combination, earn-out amount							$ 12,835
Change in fair value of contingent consideration			$ 213	$ 767	$ (1,140)	$ 767
Goodwill			179,519		179,519		$ 184,478	$ 122,077
Income tax (benefit) expense			(1,019)	(855)	(74)	1,245
Amortization of intangible assets			3,283	5,973	$ 6,604	11,995
Customer Relationships [Member] \| Minimum [Member]
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life					10 years		10 years
Customer Relationships [Member] \| Maximum [Member]
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life					21 years		21 years
Spectrum Tracer Services [Member]
Business Acquisition [Line Items]
Ownership interest acquired, percent	100.00%
Business combination consideration transferred	$ 83,744
Common stock issued in business acquisition	0.4
Cash payment for acquisition	$ 76,485
Common stock price per share	$ 19.42
Business combination, earn-out amount	$ 400		2,000		$ 2,000		$ 3,400
Change in fair value of contingent consideration			100
Goodwill	40,187
Business combination goodwill not deductible for tax purpose	$ 6,000
Acquisition costs				300		400
Amortization of intangible assets			400		800
Spectrum Tracer Services [Member] \| If Actual Gross Profit Greater Than Earn-Out Threshold During October 1, 2017 and December 31, 2018 [Member]
Business Acquisition [Line Items]
Maximum earn-out contingent consideration			12,500		12,500
Spectrum Tracer Services [Member] \| Customer Relationships [Member]
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life	21 years
Repeat Precision [Member]
Business Acquisition [Line Items]
Ownership interest acquired, percent		50.00%
Business combination consideration transferred		$ 12,954
Cash payment for acquisition		5,996
Maximum earn-out contingent consideration			10,000		10,000
Business combination, earn-out amount			9,700		9,700		$ 9,400
Proceeds from promissory note		1,000
Earn-out as a contingent adjustment to asset purchase price		7,000
Change in fair value of contingent consideration			100	800	300	800
Goodwill		15,222
Acquisition costs				21		300
Amortization of intangible assets			$ 100	$ 100	$ 200	$ 200
Repeat Precision [Member] \| Customer Relationships [Member]
Business Acquisition [Line Items]
Finite-lived intangible assets acquired		$ 4,100
Finite-lived intangible asset, useful life					10 years

Acquisition (Summary of Selected Financial Information on Pro Forma Basis) (Details) - Spectrum Tracer Services [Member] - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2017
Revenue	$ 44,771	$ 108,777
Net income attributable to NCS Multistage Holdings, Inc.	$ (3,846)	$ 3,416
Diluted earnings per share	$ (0.09)	$ 0.08

Acquisitions (Summary of Consideration and Assets Acquired) (Details) - USD ($) $ in Thousands	Aug. 31, 2017	Feb. 01, 2017	Jun. 30, 2018	Dec. 31, 2017	Dec. 31, 2016
Preliminary purchase price allocation
Goodwill			$ 179,519	$ 184,478	$ 122,077
Spectrum Tracer Services [Member]
Consideration
Cash consideration	$ 76,485
Equity consideration	6,907
Earn-out liability recognized	352
Total consideration	83,744
Preliminary purchase price allocation
Cash	1,326
Accounts receivable	4,648
Inventories	3,761
Other current assets	480
Property and equipment	4,725
Intangible assets	31,900
Other long-term assets	26
Total identifiable assets acquired	46,866
Accounts payable—trade	454
Accrued expenses	436
Income taxes payable	228
Other current liabilities	44
Deferred tax liability	956
Other long-term liabilities	1,191
Total liabilities assumed	3,309
Net identifiable assets acquired	43,557
Goodwill	40,187
Net assets acquired	$ 83,744
Repeat Precision [Member]
Consideration
Cash consideration		$ 5,996
Earn-out liability recognized		6,958
Total consideration		12,954
Preliminary purchase price allocation
Other net assets		174
Inventories		662
Property and equipment		5,750
Intangible assets		4,100
Total identifiable assets acquired		25,908
Goodwill		15,222
Less: non-controlling interest		(12,954)
Net assets acquired		$ 12,954

Acquisitions (Schedule of Amount Allocated to Intangible Assets) (Details) - USD ($) $ in Thousands		6 Months Ended	12 Months Ended
	Aug. 31, 2017	Jun. 30, 2018	Dec. 31, 2017
Spectrum Tracer Services [Member]
Intangibles assets, fair value	$ 31,900
Technology [Member] \| Minimum [Member]
Estimated useful lives		14 years	14 years
Technology [Member] \| Maximum [Member]
Estimated useful lives		16 years	16 years
Technology [Member] \| Spectrum Tracer Services [Member]
Intangibles assets, fair value	$ 5,600
Estimated useful lives	16 years
Trademarks [Member] \| Minimum [Member]
Estimated useful lives		5 years	5 years
Trademarks [Member] \| Maximum [Member]
Estimated useful lives		10 years	10 years
Trademarks [Member] \| Spectrum Tracer Services [Member]
Intangibles assets, fair value	$ 1,600
Estimated useful lives	10 years
Customer Relationships [Member] \| Minimum [Member]
Estimated useful lives		10 years	10 years
Customer Relationships [Member] \| Maximum [Member]
Estimated useful lives		21 years	21 years
Customer Relationships [Member] \| Spectrum Tracer Services [Member]
Intangibles assets, fair value	$ 24,700
Estimated useful lives	21 years

Inventories (Schedule of Inventories) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Inventories [Abstract]
Raw materials	$ 2,812	$ 2,412
Work in process	746	623
Finished goods	27,433	30,100
Total inventories	$ 30,991	$ 33,135

Property and Equipment (Schedule of Property and Equipment by Major Asset Class) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Property and equipment	$ 31,305	$ 29,905
Less: Accumulated depreciation and amortization	(8,265)	(7,012)
Property and equipment, net, excluding construction in progress	23,040	22,893
Property and equipment, net	25,691	23,651
Land [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	2,071	2,167
Building and improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	4,989	5,155
Machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	14,057	13,418
Computers and software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	2,093	2,157
Furniture and fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	1,042	1,013
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	6,809	5,751
Service equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	244	244
Construction in progress [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, net	$ 2,651	$ 758

Goodwill and Identifiable Intangibles (Changes in Carrying Amount of Goodwill) (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Goodwill and Identifiable Intangibles [Abstract]
Goodwill, beginning balance	$ 184,478	$ 122,077
Acquisitions		55,409
Currency translation adjustment	(4,959)	6,992
Goodwill, ending balance	$ 179,519	$ 184,478

Goodwill and Identifiable Intangibles (Schedule of Identifiable Intangibles) (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, Gross Carrying Amount	$ 189,000	$ 195,079
Finite-lived intangible assets, Accumulated Amortization	(62,124)	(58,667)
Finite-lived intangible assets, Net Balance	126,876	136,412
Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, Gross Carrying Amount	146,283	151,433
Finite-lived intangible assets, Accumulated Amortization	(56,068)	(52,730)
Finite-lived intangible assets, Net Balance	$ 90,215	$ 98,703
Technology [Member] \| Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	14 years	14 years
Technology [Member] \| Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	16 years	16 years
Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, Gross Carrying Amount	$ 1,600	$ 2,588
Finite-lived intangible assets, Accumulated Amortization	(133)	(1,042)
Finite-lived intangible assets, Net Balance	$ 1,467	$ 1,546
Trademarks [Member] \| Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	5 years	5 years
Trademarks [Member] \| Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	10 years	10 years
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, Gross Carrying Amount	$ 40,458	$ 41,058
Finite-lived intangible assets, Accumulated Amortization	(5,923)	(4,895)
Finite-lived intangible assets, Net Balance	$ 34,535	$ 36,163
Customer Relationships [Member] \| Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	10 years	10 years
Customer Relationships [Member] \| Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	21 years	21 years
Internally Developed Software [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	5 years
Finite-lived intangible assets, Gross Carrying Amount	$ 659
Finite-lived intangible assets, Net Balance	$ 659

Accrued Expenses (Schedule of Accrued Expenses) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Accrued Expenses [Abstract]
Accrued payroll and bonus	$ 3,999	$ 5,167
Property and franchise taxes accrual	200	390
Accrued acquisition related costs		25
Accrued other miscellaneous liabilities	1,093	1,091
Total Accrued Expenses	$ 5,292	$ 6,673

Debt (Narrative) (Details) - USD ($)			1 Months Ended		3 Months Ended	6 Months Ended
Debt (Narrative) (Details) - USD ($)	May 04, 2017	Feb. 27, 2017	Apr. 30, 2017	Feb. 28, 2017	Jun. 30, 2018	Jun. 30, 2018	Jun. 30, 2017	Feb. 16, 2018	Dec. 31, 2017	Aug. 31, 2017
Debt Instrument [Line Items]
Amortization expense of deferred financing charges						$ 168,000	$ 289,000
Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Debt instrument, fair value					$ 24,500,000	24,500,000			$ 26,700,000
Promissory Note [Member] \| Repeat Precision [Member]
Debt Instrument [Line Items]
Debt instrument, maximum borrowing capacity		$ 3,800,000						$ 4,300,000
Long-term debt, gross					400,000	$ 400,000			3,300,000
Debt maturity date						Feb. 16, 2019
Promissory Note [Member] \| Repeat Precision [Member] \| Prime Rate [Member]
Debt Instrument [Line Items]
Debt instrument variable interest rate		1.00%
Promissory Note [Member] \| Repeat Precision [Member] \| Maximum [Member] \| If Not Paid by Maturity Date [Member]
Debt Instrument [Line Items]
Debt instrument stated interest rate		18.00%
Equipment Notes [Member] \| Repeat Precision [Member]
Debt Instrument [Line Items]
Long-term debt, gross					500,000	$ 500,000			600,000
Equipment Notes [Member] \| Repeat Precision [Member] \| February 2017 Note [Member]
Debt Instrument [Line Items]
Debt instrument, face amount				$ 800,000
Debt maturity date						Feb. 27, 2021
Equipment Notes [Member] \| Repeat Precision [Member] \| February 2017 Note [Member] \| Prime Rate [Member]
Debt Instrument [Line Items]
Debt instrument variable interest rate				1.00%
Equipment Notes [Member] \| Repeat Precision [Member] \| April 2017 Note [Member]
Debt Instrument [Line Items]
Long-term debt, gross					$ 600,000	$ 600,000			700,000
Debt instrument, face amount			$ 800,000
Debt maturity date						Dec. 21, 2018
Equipment Notes [Member] \| Repeat Precision [Member] \| April 2017 Note [Member] \| Prime Rate [Member]
Debt Instrument [Line Items]
Debt instrument variable interest rate			1.00%
Equipment Notes [Member] \| Repeat Precision [Member] \| Maximum [Member] \| If Not Paid by Maturity Date [Member]
Debt Instrument [Line Items]
Debt instrument stated interest rate			18.00%	18.00%
Amended And Restated Credit Agreement [Member]
Debt Instrument [Line Items]
Debt instrument stated interest rate					6.25%	6.25%
Amended And Restated Credit Agreement [Member] \| Revolving Credit U.S. Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 25,000,000									$ 50,000,000
Interest expense on debt					$ 400,000	$ 700,000
Line of credit outstanding					20,000,000	20,000,000			20,000,000
Amended And Restated Credit Agreement [Member] \| Revolving Credit Canadian Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	25,000,000
Line of credit outstanding					0	0			$ 0
Amended And Restated Credit Agreement [Member] \| Letter of Credit [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	5,000,000
Amended And Restated Credit Agreement [Member] \| Swingline Loans [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 5,000,000
Amended And Restated Credit Agreement [Member] \| Commencing on Quarter Ending June 30, 2017 through Quarter Ending Prior to March 31, 2018 [Member]
Debt Instrument [Line Items]
Leverage ratio	3.00%
Amended And Restated Credit Agreement [Member] \| Commencing on Quarter Ending June 30, 2017 through Quarter Ending on or After March 31, 2018 [Member]
Debt Instrument [Line Items]
Leverage ratio	2.50%
Amended And Restated Credit Agreement [Member] \| Commencing on Quarter Ending June 30, 2017 through Last Day of Each Fiscal Quarter [Member]
Debt Instrument [Line Items]
Interest coverage ratio	2.75%
Amended And Restated Credit Agreement [Member] \| If Leverage Ratio as of End of Any Fiscal Quarter is Greater than 2.00 to 1.00 and Amount Outstanding Under U.S. Facility at Any Time During such Fiscal Quarter was Greater than $0 [Member] \| Revolving Credit U.S. Facility [Member]
Debt Instrument [Line Items]
Asset coverage ratio	1.00%
Amended And Restated Credit Agreement [Member] \| If Leverage Ratio as of End of Any Fiscal Quarter is Greater than 2.00 to 1.00 and the Amount Outstanding Under the Canadian Facility at Any Time During such Fiscal Quarter was Greater than $0 [Member] \| Revolving Credit Canadian Facility [Member]
Debt Instrument [Line Items]
Asset coverage ratio	1.00%
Amended And Restated Credit Agreement [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Leverage ratio	2.00%
Amended And Restated Credit Agreement [Member] \| Minimum [Member] \| US And Canadian Base Rate [Member]
Debt Instrument [Line Items]
Debt instrument variable interest rate	2.25%
Amended And Restated Credit Agreement [Member] \| Minimum [Member] \| Eurocurrency Rate [Member]
Debt Instrument [Line Items]
Debt instrument variable interest rate	3.25%
Amended And Restated Credit Agreement [Member] \| Maximum [Member] \| US And Canadian Base Rate [Member]
Debt Instrument [Line Items]
Debt instrument variable interest rate	3.00%
Amended And Restated Credit Agreement [Member] \| Maximum [Member] \| Eurocurrency Rate [Member]
Debt Instrument [Line Items]
Debt instrument variable interest rate	4.00%
Amended And Restated Credit Agreement [Member] \| Senior Secured Credit Facility [Member]
Debt Instrument [Line Items]
Debt issuance cost	$ 1,000,000
Amortization expense of deferred financing charges					$ 100,000	$ 200,000
Credit facility maturity date						May 04, 2020

Debt (Schedule of Long-term Debt) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Total debt, net	$ 25,041	$ 27,036
Less: current portion	(2,801)	(5,334)
Long-term debt	22,240	21,702
Senior Secured Credit Facility [Member]
Debt Instrument [Line Items]
Long-term debt and capital lease obligations	20,000	20,000
Promissory Note [Member]
Debt Instrument [Line Items]
Long-term debt and capital lease obligations	448	3,313
Equipment Notes [Member]
Debt Instrument [Line Items]
Long-term debt and capital lease obligations	1,133	1,295
Capital Leases [Member]
Debt Instrument [Line Items]
Long-term debt and capital lease obligations	$ 3,460	$ 2,428

Commitments and Contingencies (Narrative) (Details) $ in Millions	Mar. 03, 2017 USD ($)
Commitments and Contingencies [Abstract]
Proceeds from an arbitration case	$ 0.9

Stockholders' Equity (Narrative) (Details)		1 Months Ended	6 Months Ended	12 Months Ended
Stockholders' Equity (Narrative) (Details)	Feb. 14, 2018 shares	Apr. 30, 2017	Jun. 30, 2018 item $ / shares shares	Dec. 31, 2017 $ / shares shares
Stockholders' Equity [Abstract]
Voting rights entitled for each common stockholders			The holders of common stock are entitled to one vote for each share of common stock held.
Preferred stock voting rights, description			The holder, Cemblend Systems, Inc. ("Cemblend"), of the one share of preferred stock, designated as the "Special Voting Share" in our amended and restated certificate of incorporation, is entitled to vote on all matters that a holder of common stock is entitled to vote on and is entitled to cast a number of votes equal to the number of exchangeable shares of NCS Multistage, Inc. ("NCS Canada"), a subsidiary of the Company, then outstanding that are not owned by us, multiplied by the exchange ratio (as defined in the articles of incorporation of NCS Canada), which was adjusted from one to three in April 2017 in connection with our stock split.
Voting right for each share of common stock held \| item			1
Common stock issuable for the exchangeable shares			1,326,935	1,769,247
Shares of common stock issued to Cemblend in exchange for shares of NCS Canada	442,312
Stock split ratio of outstanding shares of common stock		3
Dividends declared \| $ / shares			$ 0	$ 0

Share-Based Compensation (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Allocated share-based compensation expense	$ 3.0		$ 1.5	$ 5.3	$ 1.8
Restricted Stock Units (RSUs) [Member]
Share-based compensation shares granted		582,184
Weighted average grant date fair value		$ 14.54
Restricted Stock Units (RSUs) [Member] \| Minimum [Member]
Share-based compensation vesting period				3 years
Restricted Stock Units (RSUs) [Member] \| Non-Employee Board Of Directors [Member]
Share-based compensation vesting period				1 year
Restricted Stock Units (RSUs) [Member] \| Vest Over Three Years [Member]
Share-based compensation shares granted		536,014
Restricted Stock Units (RSUs) [Member] \| Vest on One Year Anniversary [Member] \| Non-Employee Board Of Directors [Member]
Share-based compensation shares granted		46,170
Performance Stock Unit Awards (“PSUs”) [Member]
Share-based compensation shares granted		156,516
Weighted average grant date fair value		$ 17.37
Share-based compensation award vesting period				3 years
Performance Stock Unit Awards (“PSUs”) [Member] \| Performance period from January 1, 2018 to December 31, 2020 [Member] \| Maximum [Member]
Percentage of vesting of share-based compensation awards				200.00%

Income Taxes (Narrative) (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
Income Taxes (Narrative) (Details) - USD ($)	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Income Taxes [Abstract]
Income tax (benefit) expense	$ (1,019,000)	$ (855,000)	$ (74,000)	$ 1,245,000
Effective tax rate	(26.60%)	(15.30%)	(0.80%)	43.70%
Tax benefit from exercise of stock option awards			$ 300,000
Provisional tax benefit for impact of the Tax Act of 2017	$ 500,000		$ 2,600,000
Statutory corporate tax rate			21.00%		35.00%
Reduction in effective income tax rate continuing operations	13.10%		29.10%
Income tax interest and penalties			$ 46,000	$ 2,000

(Loss) Earnings Per Common Share (Reconciliation of Numerator and Denominator for Calculating (Loss) Earnings Per Share from Net (Loss) Income) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Numerator—Basic
Net (loss) income	$ (2,818)	$ (4,745)	$ 9,047	$ 1,603
Less: income attributable to participating shares			282	74
Less: income (loss) attributable to non-controlling interest	1,235	(254)	2,122	(456)
Net (loss) income attributable to NCS Multistage Holdings, Inc.—Basic	(4,053)	(4,491)	6,643	1,985
Numerator—Diluted
Net (loss) income	(2,818)	(4,745)	9,047	1,603
Less: income (loss) attributable to non-controlling interest	1,235	(254)	2,122	(456)
Net (loss) income attributable to NCS Multistage Holdings, Inc.—Diluted	$ (4,053)	$ (4,491)	$ 6,925	$ 2,059
Denominator
Basic weighted average number of shares (in shares)	44,778,000	40,198,000	44,517,000	37,119,000
Exchangeable shares for common stock (in shares)			1,434,000	1,803,000
Dilutive effect of stock options, RSUs, PSUs and ESPP			1,235,000	1,266,000
Diluted weighted average number of shares (in shares)	44,778,000	40,198,000	47,186,000	40,188,000
(Loss) earnings per common share
Basic (in dollars per share)	$ (0.09)	$ (0.11)	$ 0.15	$ 0.05
Diluted (in dollars per share)	$ (0.09)	$ (0.11)	$ 0.15	$ 0.05
Potentially dilutive securities excluded as anti-dilutive	5,040,000	3,307,000	231,000

Segment and Geographic Information (Narrative) (Details)	6 Months Ended
	Jun. 30, 2018 segment
Segment and Geographic Information [Abstract]
Number of reportable segments	1