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Debt Obligations - Subordinated Debt (Details) - Affiliated Entity - Porter - Subordinated Loan Agreements and Promissory Notes - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Apr. 18, 2017
Apr. 17, 2017
Mar. 31, 2015
Sep. 30, 2020
Sep. 30, 2020
Debt Instrument [Line Items]          
Proceeds from related party, debt     $ 2,500    
Related party transaction, rate 6.00% 12.00% 12.00%    
Interest expense, related party       $ 90 $ 265
Telos Corporation          
Debt Instrument [Line Items]          
Noncontrolling interest, ownership percentage by noncontrolling owners     35.00%