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Derivatives - Schedule of Balance Sheet Classification and Fair Value of Instruments (Detail) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Other assets    
Derivative [Line Items]    
Other assets - Cash flow hedge swap agreements $ 0 $ 0
Other liabilities    
Derivative [Line Items]    
Derivative liability, fair value $ 61,421 $ 98,325