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Derivative Instruments and Hedging Activities - Additional Information (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($) derivative	Jun. 30, 2021 USD ($) derivative	Jun. 30, 2022 USD ($) derivative	Jun. 30, 2021 USD ($) derivative	Dec. 31, 2021 USD ($) derivative
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, net liability position, aggregate fair value	$ 14,400		$ 14,400
Cash collateral received	15,900		$ 15,900
Minimum
Derivative Instruments, Gain (Loss) [Line Items]
Derivative expiration period			30 days
Maximum
Derivative Instruments, Gain (Loss) [Line Items]
Derivative expiration period			60 days
Not Designated as Hedging Instrument | Residential mortgage loan commitments
Derivative Instruments, Gain (Loss) [Line Items]
Aggregate notional amount	5,000		$ 5,000		$ 8,200
Interest Rate Contract
Derivative Instruments, Gain (Loss) [Line Items]
Cash collateral received	$ 14,398		$ 14,398		$ 0
Interest Rate Contract | Derivative Designated as Hedging Instrument | Cash Flow Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Number of interest rate derivatives terminated | derivative				4
Aggregate notional amount, terminated				$ 850,000
Reclassification of realized losses from AOCI, discontinuation of cash flow hedge				$ 25,900
Number of outstanding interest rate derivatives | derivative	0		0		0
Interest Rate Contract | Derivative Designated as Hedging Instrument | Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Number of interest rate derivatives terminated | derivative	7	1	9	8
Aggregate notional amount, terminated	$ 31,500	$ 5,000	$ 48,000	$ 191,800
Number of outstanding interest rate derivatives | derivative	7		7		16
Aggregate notional amount	$ 32,500		$ 32,500		$ 80,500
Interest rate swaps | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Aggregate notional amount	$ 1,400,000		$ 1,400,000		$ 1,400,000
Number of derivative instruments held | derivative	151		151		153
Interest rate caps | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Aggregate notional amount	$ 243,800		$ 243,800		$ 264,700
Number of derivative instruments held | derivative	12,000		12,000		14,000
Credit contracts | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Aggregate notional amount	$ 143,800		$ 143,800		$ 129,900

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