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Business Combinations - Summary of Adjustments in Unaudited Pro Forma Combined Net Revenues (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Business Acquisition [Line Items]    
Net revenue $ 17,377 $ 11,216
Add: Net revenue - acquired businesses 32 4,730
Net revenue - pro forma combined $ 17,409 $ 15,946