Revision of Prior Year Interim Financial Statements - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Error Corrections and Prior Period Adjustments Restatement [Line Items]
General and administrative	$ 23,865	$ 29,635		$ 46,788	$ 49,712
Total revenue	55,791	53,644		105,951	109,402
Distributions to Telos ID Class B member - non-controlling interest				0	2,436
Services
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total revenue	50,270	49,003		98,378	101,061
Products
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total revenue	$ 5,521	4,641		$ 7,573	8,341
Error Correction
Error Corrections and Prior Period Adjustments Restatement [Line Items]
General and administrative		892			1,004
Total revenue		1,085			1,085
Distributions to Telos ID Class B member - non-controlling interest					2,436
Error Correction | Services
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total revenue		1,385			1,385
Error Correction | Products
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total revenue		(300)			(300)
Error Correction | Single Individual Stock Compensation
Error Corrections and Prior Period Adjustments Restatement [Line Items]
General and administrative		200	$ 100		$ 300
Error Correction | Overhead Cost Pools Stock Compensation
Error Corrections and Prior Period Adjustments Restatement [Line Items]
General and administrative		700
Error Correction | Revenue Related To Stub Period Of A Contract | Services
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total revenue		300
Error Correction | Revenue Related To Stub Period Of A Contract | Products
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total revenue		$ (300)