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Goodwill and Intangible Assets - Schedule of Change in Carrying Amount of Goodwill (Details) - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2020
Dec. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract]    
Beginning balance $ 8,552 $ 8,060
Additions attributable to acquisition   492
Acquisition adjustments 1,290  
Ending balance $ 9,842 $ 8,552