Summary of Selected Quarterly Financial Data (Unaudited) (Details) - USD ($) $ in Thousands	3 Months Ended																12 Months Ended
	Dec. 31, 2015		Sep. 30, 2015		Jun. 30, 2015		Mar. 31, 2015		Dec. 31, 2014		Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Summary of Selected Quarterly Financial Data (Unaudited) [Abstract]
Revenue	$ 26,925		$ 33,662		$ 32,028		$ 28,019		$ 29,902		$ 38,507		$ 29,009		$ 30,144		$ 120,634	$ 127,562	$ 207,394
Gross profit	8,051		8,674		7,170		6,778		5,611		7,504		5,396		6,442
Loss before income taxes and non-controlling interest	(2,684)		(959)		(2,564)		(3,030)		(2,819)		(3,611)		(5,384)		(4,786)		(9,237)	(16,600)	867
Net loss attributable to Telos Corporation	$ (9,380)	[1]	$ (1,406)	[1]	$ (2,408)	[1]	$ (2,746)	[1]	$ (1,609)	[1]	$ (774)	[1]	$ (4,346)	[1]	$ (5,559)	[1]	$ (15,940)	$ (12,288)	$ (2,618)

[1] Changes in net income are the result of several factors, including seasonality of the government year-end buying season, as well as the nature and timing of other deliverables.