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Cash Flow Hedges - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2020
Mar. 31, 2021
Nov. 14, 2018
Cash Flow Hedges      
Settlement value of interest rate swap liability before tax   $ 7.7  
Receive Variable Pay Fixed Rate [Member] | Interest Rate Swap [Member]      
Cash Flow Hedges      
Interest rate swap notional amount     $ 410.0
Derivatives interest rate swap fixed interest rate     (2.9065%)
Derivative hedges realized gain loss $ 1.3