CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract]
Net (loss) income	$ (43,134)	$ 6,841	$ (2,137)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(71)	38	(11)
Less: Comprehensive income attributable to non-controlling interest	0	(5,154)	(4,264)
Comprehensive (loss) income attributable to Telos Corporation	$ (43,205)	$ 1,725	$ (6,412)