XML 59 R45.htm IDEA: XBRL DOCUMENT v3.20.4
Revenue Recognition - Summary of Assets and Liabilities Related to Uncompleted Contracts and Customer Deposits (Detail) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Abstract]    
Contract assets $ 24,334 $ 22,138
Contract liabilities $ (8,965) $ (8,888)