CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) [Abstract]
Net income (loss)	$ 6,841	$ (2,137)	$ 1,737
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	38	(11)	(15)
Comprehensive income attributable to non-controlling interest	(5,154)	(4,264)	(3,377)
Comprehensive income (loss) attributable to Telos Corporation	$ 1,725	$ (6,412)	$ (1,655)