Derivative Instruments and Hedging Activities - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Derivative Instruments Gain Loss [Line Items]
Derivatives outstanding	$ 0
Unrealized gain (loss) on derivatives, tax (benefit) expense	500,000	$ (1,400,000)
Interest Rate Swaps [Member]
Derivative Instruments Gain Loss [Line Items]
Derivatives outstanding	$ 0
Not Designated as Hedge Accounting Relationships [Member]
Derivative Instruments Gain Loss [Line Items]
Derivatives outstanding		$ 0