Document and Entity Information	12 Months Ended
	Dec. 31, 2014	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
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Document Type	10-K
Amendment Flag	false
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