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Business Combinations and Goodwill (Tables)
 9 Months Ended
Sep. 30, 2021
Business Combination and Asset Acquisition [Abstract]  
Schedule of Change in Carrying Value of Goodwill
The change in the carrying value of goodwill for the nine months ended September 30, 2021 was as follows (in thousands);
Balance, January 1, 2021$239,053 
Acquisitions4,300 
Balance, September 30, 2021$243,353