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Debt (Details) - USD ($)
1 Months Ended 12 Months Ended
Jul. 30, 2021
Apr. 30, 2020
Mar. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Debt Instrument [Line Items]            
Proceeds from borrowing on credit facilities       $ 0 $ 64,563,000 $ 0
Loan received from Small Business Administration's Paycheck Protection Program   $ 8,100,000        
Repayments of lines of credit       38,124,000 $ 26,439,000 $ 0
Repayments of small business administration's paycheck protection program $ 8,100,000          
Final termination payment 900,000          
Accelerated unamortized debt issuance costs 400,000          
Debt outstanding       $ 0    
Line of Credit | Variable Rate Revolving Line Of Credit            
Debt Instrument [Line Items]            
Proceeds from borrowing on credit facilities     $ 11,400,000      
Line of Credit | Variable Rate Growth Capital Advance Components            
Debt Instrument [Line Items]            
Proceeds from borrowing on credit facilities     15,000,000      
Line of Credit | Subordinated Credit Facility            
Debt Instrument [Line Items]            
Proceeds from borrowing on credit facilities     $ 30,000,000      
Repayments of lines of credit $ 30,000,000