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Summary of Significant Accounting Policies - Equity Method Investment (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Jun. 30, 2021
Schedule of Equity Method Investments [Line Items]        
Loss on equity method investment $ (2,480) $ (1,681) $ (831)  
Equity method investment 17,008 10,488    
Capital contributed 9,000 4,000 $ 9,000  
WorkLLama, LLC        
Schedule of Equity Method Investments [Line Items]        
Percent ownership of equity method investment       50.00%
Loss on equity method investment (2,500) (1,700)    
Equity method investment 17,000 10,500    
Contingent payments liability, maximum 22,500 22,500    
Capital contributed $ 9,000 $ 4,000