CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenue
Revenue	$ 70,066	$ 47,440	$ 178,383	$ 135,029
Costs and expenses
Total costs and expenses	43,998	30,878	117,400	88,652
Selling, general and administrative expenses
Sales and marketing	5,363	1,491	14,233	4,556
Research and development	5,396	3,598	14,783	11,070
General and administrative	20,562	6,960	69,271	20,769
Selling, general and administrative expenses	31,321	12,049	98,287	36,395
Operating (loss) income	(5,253)	4,513	(37,304)	9,982
Other income (expense)
Other income (expense)	20	2	(1,001)	14
Interest expense	(195)	(2,013)	(583)	(6,026)
(Loss) income before income taxes	(5,428)	2,502	(38,888)	3,970
Benefit from (provision for) income taxes	41	(8)	(6)	136
Net (loss) income	(5,387)	2,494	(38,894)	4,106
Less: Net income attributable to non-controlling interest	0	(2,694)	0	(6,284)
Net loss attributable to Telos Corporation	$ (5,387)	$ (200)	$ (38,894)	$ (2,178)
Net (loss) income per share attributable to Telos Corporation, basic (in dollars per share)	$ (0.08)	$ (0.01)	$ (0.59)	$ (0.06)
Net (loss) income per share attributable to Telos Corporation, diluted (in dollars per share)	$ (0.08)	$ (0.01)	$ (0.59)	$ (0.06)
Weighted-average shares of common stock outstanding, basic (in dollars per share)	66,755	39,002	65,999	38,554
Weighted-average shares of common stock outstanding, diluted (in dollars per share)	66,755	39,002	65,999	38,554
Services
Revenue
Revenue	$ 63,690	$ 44,166	$ 163,366	$ 124,210
Costs and expenses
Total costs and expenses	40,031	28,619	109,134	82,862
Products
Revenue
Revenue	6,376	3,274	15,017	10,819
Costs and expenses
Total costs and expenses	$ 3,967	$ 2,259	$ 8,266	$ 5,790