Quarterly report pursuant to Section 13 or 15(d)

Merger and Acquisition Activity - Summary of Change in Contingent Consideration and Interest Expense (Detail)

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Merger and Acquisition Activity - Summary of Change in Contingent Consideration and Interest Expense (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Business Acquisition, Contingent Consideration [Line Items]        
Change in contingent consideration $ 43 $ (35) $ 2,356 $ 997
Interest expense 225 282 624 869
Total $ 268 $ 247 $ 2,980 $ 1,866