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Business Combinations - Summary of Source of Funds (Detail) - USD ($)
$ in Thousands
Oct. 01, 2020
Dec. 31, 2020
Dec. 31, 2019
Revolving Line of Credit [Member]      
Business Acquisition [Line Items]      
Revolving line of credit   $ 0 $ (9,500)
Amber Leaf Partners Inc [Member]      
Business Acquisition [Line Items]      
Cash balances on hand    
Cash paid at Closing 9,664    
Amber Leaf Partners Inc [Member] | Term Loan Debt Facility [Member]      
Business Acquisition [Line Items]      
Increase in term loan debt facility 10,000    
Amber Leaf Partners Inc [Member] | Revolving Line of Credit [Member]      
Business Acquisition [Line Items]      
Revolving line of credit $ (336)