Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2014	Jun. 30, 2013	Mar. 24, 2015
Entity Information [Line Items]
Entity Registrant Name	TELOS CORP
Entity Central Index Key	0000320121
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Entity Public Float		$ 0
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Document Type	10-K
Amendment Flag	true
Amendment Description	FORM 10-K/A AMENDED ANNUAL REPORT
Document Period End Date	Dec. 31, 2014
Class A Common Stock [Member]
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding			40,238,461
Class B Common Stock [Member]
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding			4,037,628