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Derivative Instruments and Hedging Activities - Additional Information (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($) derivative	Mar. 31, 2022 USD ($) derivative	Dec. 31, 2022 USD ($) derivative
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, net liability position, aggregate fair value	$ 21,000
Cash collateral received	$ 23,000
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	$ 3,300		$ 1,500
Interest Rate Contract
Derivative Instruments, Gain (Loss) [Line Items]
Cash collateral received	$ 21,012		$ 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	3		3
Aggregate notional amount	$ 22,500		$ 22,500
Number of interest rate derivatives entered into during the period | derivative	2
Notional amount of derivatives entered into during the period	$ 550,000
Notional amount of basis adjustments	4,600
Number of interest rate derivatives terminated | derivative		2
Aggregate notional amount, terminated		$ 16,500
Interest rate swaps | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Aggregate notional amount	$ 1,300,000		$ 1,300,000
Number of derivative instruments held | derivative	139		141
Interest rate caps | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Aggregate notional amount	$ 244,600		$ 245,800
Number of derivative instruments held | derivative	12		12
Credit contracts | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Aggregate notional amount	$ 123,500		$ 142,000

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Amount of obligation to return cash collateral under master netting arrangements that have not been offset against derivative assets.

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Nominal or face amount used to calculate payment on derivative.

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Period remaining until the derivative contract matures, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of interest rate derivative instruments held by the entity at the reporting date.

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