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Price of a single share of a number of saleable stocks of a company.

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Number of new stock issued during the period.

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Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Basis of Presentation and Summary of Significant Accounting Policies - Narrative (Details) $ / shares in Units, $ in Thousands					3 Months Ended		12 Months Ended
	Apr. 19, 2021 USD ($) shares	Apr. 06, 2021 USD ($) $ / shares shares	Nov. 19, 2020 USD ($) $ / shares shares	Nov. 12, 2020	Mar. 31, 2022 USD ($) segment	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)
Subsidiary, Sale of Stock [Line Items]
Stockholders' equity note, stock split, conversion ratio				0.794
Number of operating segments \| segment					2
Number of reportable segments \| segment					2
General and administrative					$ 22,923	$ 20,076
Changes in other operating assets and liabilities					(502)	(7,148)
Inventory, gross					2,900		$ 2,100
Inventory obsolescence reserve					$ 773		$ 861
Goodwill amortization period for income tax purposes					15 years
Error Correction
Subsidiary, Sale of Stock [Line Items]
General and administrative						112
Changes in other operating assets and liabilities						$ 2,436
Service Based RSU Awards \| Maximum
Subsidiary, Sale of Stock [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period					3 years
Service Based RSU Awards \| Minimum
Subsidiary, Sale of Stock [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period					2 years
Performance Shares
Subsidiary, Sale of Stock [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period					3 years
Performance Shares \| Executive Officer
Subsidiary, Sale of Stock [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period							3 years
Enlightenment Capital Solutions Fund, II L.P.
Subsidiary, Sale of Stock [Line Items]
Payments for repurchase of common stock	$ 1,300
Stock repurchased during period, shares (in shares) \| shares	39,682
Payments to repurchase shares and warrants	$ 26,900
Warrant repurchased during period, shares (in shares) \| shares	900,970
Telos ID
Subsidiary, Sale of Stock [Line Items]
Business acquisition, percentage of voting interests acquired					100.00%
IPO
Subsidiary, Sale of Stock [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
Subsidiary, Sale of Stock [Line Items]
Conversion of preferred stock to common stock			108,900
IPO \| Telos ID \| Class B Common Stock
Subsidiary, Sale of Stock [Line Items]
Payments for repurchase of common stock			$ 30,000
Secondary Public Offering
Subsidiary, Sale of Stock [Line Items]
Share price (in dollars per share) \| $ / shares		$ 33.00
Net proceeds from initial public offering		$ 64,300
Sale of stock, number of shares issued in transaction (in shares) \| shares		9,100,000
Sale of stock, number of shares issued by certain existing shareholders (in shares) \| shares		7,000,000