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Summary of Significant Accounting Policies - Other Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Other Assets    
Other assets $ 2,356 $ 2,153
Held by service provider 1,418 1,832
Letter of credit for security deposit 478 $ 321
Debt    
Deferred financing costs 410  
Line of Credit | New Credit Facility    
Debt    
Deferred financing costs $ 460