CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME [Abstract]
Net (loss) income	$ (5,137)	$ 6,609	$ (62,936)	$ (22,837)
Foreign currency translation adjustments, net of tax of $0	809	(1,017)	(2,848)	2,005
Comprehensive (loss) income	(4,328)	5,592	(65,784)	(20,832)
Less: Comprehensive income attributable to non-controlling interest	726	2,988	3,233	7,809
Comprehensive (loss) income attributable to NCS Multistage Holdings, Inc.	$ (5,054)	$ 2,604	$ (69,017)	$ (28,641)