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Related Party Transactions - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Related Party Transactions [Abstract]      
Expense from transactions with related party $ 1.0 $ 0.9  
Payment to related party 0.8 $ 1.0  
Due to affiliate $ 0.7   $ 0.5