CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating activities:
Net (loss) income	$ (43,134)	$ 6,841	$ (2,137)
Adjustments to reconcile net (loss) income to cash provided by (used in) operating activities:
Gain on redemption of public preferred stock	0	(14,012)	0
Net loss on early extinguishment of debt and other transactions	0	275	0
Stock-based compensation	60,231	4	0
Dividends from preferred stock recorded as interest expense	0	3,384	3,823
Depreciation and amortization	5,624	5,353	4,972
Provision for inventory obsolescence	10	(1)	376
Provision for (benefit from) doubtful accounts receivable	7	(412)	414
Provision for doubtful non-trade receivables	0	569	0
Amortization of debt issuance costs	0	978	461
Provision for (benefit from) deferred income tax	70	31	(197)
Loss on disposal of fixed assets	6	1	15
Accretion of discount on acquisition holdback	19	0	0
Changes in assets and liabilities:
(Increase) decrease in accounts receivable	(28,937)	(2,559)	6,186
Decrease (increase) in inventories	2,054	(1,345)	2,048
Increase in prepaid expenses, other current assets and other assets	(982)	(938)	(4,005)
Increase (decrease) in accounts payable and other accrued payables	16,086	3,413	(6,730)
(Decrease) increase in accrued compensation and benefits	(1,917)	(3,713)	3,105
Increase (decrease) in contract liabilities	727	(683)	1,106
(Decrease) increase in other current liabilities and other liabilities	(2,602)	710	2,379
Cash provided by (used in) operating activities	7,262	(2,104)	11,816
Investing activities:
Cash paid for acquisition	(5,925)	0	0
Capitalized software development costs	(9,968)	(6,681)	(2,442)
Purchases of property and equipment	(3,201)	(780)	(4,090)
Cash used in investing activities	(19,094)	(7,461)	(6,532)
Financing activities:
Proceeds from issuance of common stock, net of issuance costs	64,269	272,813	0
Repurchase of outstanding warrants	(26,894)	0	0
Repurchase of common stock	(1,251)	0	0
Redemption of public preferred stock	0	(108,878)	0
Purchase of Telos ID membership interest	0	(30,000)	0
Payment of senior term loan	0	(17,351)	0
Payment of subordinated debt	0	(3,657)	0
Proceeds from senior term loan	0	0	4,881
Payments under finance lease obligations	(1,339)	(1,225)	(1,115)
Amendment fee paid to lender	0	(100)	0
Distributions to Telos ID Class B member – non-controlling interest	(2,436)	(2,743)	(2,371)
Cash  provided by financing activities	32,349	108,859	1,395
Increase in cash and cash equivalents	20,517	99,294	6,679
Cash and cash equivalents, beginning of period	106,045	6,751	72
Cash and cash equivalents, end of period	126,562	106,045	6,751
Cash paid during the year for:
Interest	758	7,259	3,299
Income taxes	60	64	40
Supplemental disclosures of non-cash investing and financing activities:
Acquisition holdback	506	0	0
Operating lease ROU assets obtained in exchange for operating lease liabilities	638	613	488
Dividends from preferred stock recorded as interest expense	0	3,384	3,823
Common stock issued on redemption of public preferred stock	0	19,213	0
Common stock issued on purchase of Telos ID membership interest	0	148,399	0
Distributions to Telos ID Class B member – non-controlling interest	0	2,436	0
Debt issuance costs and prepayment of interest on senior term loan	$ 0	$ 0	$ 119