ORGANIZATION - Narrative (Details) $ / shares in Units, $ in Thousands							12 Months Ended
	Jul. 30, 2021 USD ($)	Apr. 19, 2021 USD ($) shares	Apr. 06, 2021 USD ($) $ / shares shares	Nov. 23, 2020 USD ($)	Nov. 19, 2020 USD ($) $ / shares shares	Nov. 12, 2020	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Stockholders' equity note, stock split, conversion ratio						0.794
Payment of tax withholding related to net share settlement of equity awards							$ 11,145	$ 1,251	$ 0
Proceeds from issuance of common stock							0	64,269	272,813
Repurchase of common stock							0	26,894	0
Cash paid for acquisition							$ 0	$ 5,925	$ 0
Enlightenment Capital Solutions Fund II LP
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Payment of tax withholding related to net share settlement of equity awards		$ 1,300
Stock repurchased during period, shares (in shares) | shares		39,682
Repurchase of common stock		$ 26,900
Warrant repurchased during period, shares (in shares) | shares		900,970
Exchangeable Redeemable Preferred Stock
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Conversion of preferred stock to common stock				$ 108,900
Class B Common Stock
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Stockholders' equity note, stock split, conversion ratio							1.259446
IPO
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Number of shares issued (in shares) | shares					17,200,000
Share price (in dollars per share) | $ / shares					$ 17.00
Net proceeds from initial public offering					$ 272,800
Repayments of debt					21,000
IPO | Exchangeable Redeemable Preferred Stock
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Conversion of preferred stock to common stock					108,900
Secondary Public Offering
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Sale of stock, number of shares issued in transaction (in shares) | shares			9,100,000
Sale of stock, price per share (in dollars per share) | $ / shares			$ 33.00
Sale of stock, number of shares issued by certain existing shareholders (in shares) | shares			7,000,000
Proceeds from issuance of common stock			$ 64,300
Telos ID
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Business acquisition, percentage of voting interests acquired							100.00%
Cash paid for acquisition				$ 30,000
Telos ID | IPO | Class B Common Stock
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Payment of tax withholding related to net share settlement of equity awards					$ 30,000
Asset Purchase Agreement
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Cash paid for acquisition	$ 5,900