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Business Combinations - Summary of Fair Value of Consideration for Acquired Business (Parenthetical) (Detail) - USD ($)
$ in Thousands
Dec. 31, 2020
Oct. 01, 2020
Business Acquisition [Line Items]    
Fair value of contingent consideration $ 2,882  
Amber Leaf Partners Inc [Member]    
Business Acquisition [Line Items]    
Fair value of contingent consideration   $ 2,882