Derivative Instruments and Hedging Activities - Additional Information (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023 USD ($) derivative	Jun. 30, 2022 USD ($) derivative	Jun. 30, 2023 USD ($) derivative	Jun. 30, 2022 USD ($) derivative	Dec. 31, 2022 USD ($) derivative
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, net liability position, aggregate fair value	$ 25,700		$ 25,700
Cash collateral received	$ 26,900		$ 26,900
Minimum
Derivative Instruments, Gain (Loss) [Line Items]
Derivative expiration period	30 days		30 days
Maximum
Derivative Instruments, Gain (Loss) [Line Items]
Derivative expiration period	60 days		60 days
Not Designated as Hedging Instrument | Residential mortgage loan commitments
Derivative Instruments, Gain (Loss) [Line Items]
Aggregate notional amount	$ 3,300		$ 3,300		$ 1,500
Interest Rate Contract
Derivative Instruments, Gain (Loss) [Line Items]
Cash collateral received	$ 25,660		$ 25,660		$ 29,087
Interest Rate Contract | Derivative Designated as Hedging Instrument | Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Number of outstanding interest rate derivatives | derivative	6		6		3
Aggregate notional amount	$ 472,500		$ 472,500		$ 22,500
Number of interest rate derivatives entered into during the period | derivative	3		5
Notional amount of derivatives entered into during the period	$ 450,000
Number of interest rate derivatives terminated | derivative		7	2	9
Aggregate notional amount, terminated		$ 31,500	$ 550,000	$ 48,000
Notional amount of basis adjustments			4,600
Interest rate swaps | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Aggregate notional amount	$ 1,200,000		$ 1,200,000		$ 1,300,000
Number of derivative instruments held | derivative	129		129		141
Interest rate caps | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Aggregate notional amount	$ 243,300		$ 243,300		$ 245,800
Number of derivative instruments held | derivative	12		12		12
Credit contracts | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Aggregate notional amount	$ 98,500		$ 98,500		$ 142,000