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Summary of Significant Accounting Policies - Schedule of goodwill (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Goodwill [Roll Forward]    
Goodwill, beginning balance $ 41,386 $ 11,051
Acquisition of businesses   30,335
Working capital adjustment (172)  
Goodwill, ending balance $ 41,214 $ 41,386