(Loss) Earnings Per Common Share (Tables)

3 Months Ended

Mar. 31, 2019

(Loss) Earnings Per Common Share [Abstract]

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

	Three Months Ended
	March 31,
	2019		2018
Numerator—Basic
Net (loss) income	$	(9,878)	$	11,865
Less: income attributable to participating shares		—		399
Less: income attributable to non-controlling interest		2,088		887
Net (loss) income attributable to NCS Multistage Holdings, Inc.––Basic	$	(11,966)	$	10,579
Numerator—Diluted
Net (loss) income	$	(9,878)	$	11,865
Less: income attributable to non-controlling interest		2,088		887
Net (loss) income attributable to NCS Multistage Holdings, Inc.––Diluted	$	(11,966)	$	10,978
Denominator
Basic weighted average number of shares		45,974		44,252
Exchangeable shares for common stock		—		1,543
Dilutive effect of stock options, RSUs, PSUs and ESPP		—		1,319
Diluted weighted average number of shares		45,974		47,114
(Loss) earnings per common share
Basic	$	(0.26)	$	0.24
Diluted	$	(0.26)	$	0.23
Potentially dilutive securities excluded as anti-dilutive		4,391		-