Stockholders' Deficit, Option Plans, and Employee Benefit Plan (Details)	1 Months Ended	12 Months Ended
	May 31, 2017 shares	Dec. 31, 2017 USD ($) Vote shares	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Common Stock [Abstract]
Number of votes per share | Vote		1
Restricted Stock Grants [Abstract]
Restricted stock issued during the period (in shares)		5,005,000
Restricted stock remained subject to vesting (in shares)		3,723,750
Telos Shared Savings Plan [Abstract]
Shares held in defined contribution employee savings plan (in shares)		3,658,536
Maximum contribution percentage		2.00%
Annual vesting percentage		20.00%
Contributions to the Plan | $		$ 617,000	$ 575,000	$ 0
Telos ID [Member]
Telos Shared Savings Plan [Abstract]
Maximum contribution percentage		2.00%
Contributions to the Plan | $		$ 105,000	$ 96,000	$ 0
Restricted Stock [Member]
Restricted Stock Grants [Abstract]
Restricted stock issued during the period (in shares)	5,005,000
Restricted stock vested on date of grant		25.00%
Restricted stock vest on anniversary of the date of grant		25.00%