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Related Party Transactions - Additional Information (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Related Party Transactions [Abstract]    
Expense from transactions with related party $ 3.1 $ 5.2
Payment to related party 3.1 5.7
Due to affiliate $ 0.5 $ 0.6