CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 221	$ 72
Accounts receivable, net of reserve of $306 (Note 1)	25,576	34,542
Inventories, net of obsolescence reserve of $520 (Note 1)	3,457	4,389
Deferred program expenses	1,108	244
Other current assets	2,005	1,985
Total current assets	32,367	41,232
Property and equipment, net of accumulated depreciation of $29,602 and $28,665, respectively	19,404	17,426
Operating lease right-of-use assets (Note 10)	1,846	0
Goodwill (Note 3)	14,916	14,916
Other assets	956	915
Total assets	69,489	74,489
Current liabilities
Accounts payable and other accrued payables (Note 5)	17,525	21,779
Accrued compensation and benefits	9,213	9,082
Contract liabilities (Note 1 and 5)	5,158	5,232
Finance lease obligations - short-term	1,142	1,115
Other current liabilities	2,721	1,895
Total current liabilities	35,759	39,103
Senior term loan, net of unamortized discount and issuance costs (Note 5)	11,038	10,984
Subordinated debt (Note 5)	2,677	2,597
Finance lease obligations - long-term (Note 10)	16,571	16,865
Operating lease liabilities - long-term (Note 10)	1,584	0
Deferred income taxes (Note 7)	593	818
Public preferred stock (Note 6)	136,343	135,387
Other liabilities (Note 7)	681	838
Total liabilities	205,246	206,592
Commitments and contingencies (Note 8)
Telos stockholders' deficit
Common stock	78	78
Additional paid-in capital	4,310	4,310
Accumulated other comprehensive income	19	17
Accumulated deficit	(142,542)	(139,129)
Total Telos stockholders' deficit	(138,135)	(134,724)
Non-controlling interest in subsidiary (Note 2)	2,378	2,621
Total stockholders' deficit	(135,757)	(132,103)
Total liabilities, redeemable preferred stock, and stockholders' deficit	$ 69,489	$ 74,489