Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2012	Jun. 30, 2012	Mar. 23, 2013 Class A Common Stock [Member]	Mar. 23, 2013 Class B Common Stock [Member]
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
Entity Common Stock, Shares Outstanding			35,908,961	4,037,628
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	FY
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2012