Derivative Instruments and Hedging Activities - Fair Value of Derivative Financial Instruments (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Other Assets | Derivative Designated as Hedging Instrument | Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Assets	$ 3,653	$ 1,750
Other Assets | Derivative Designated as Hedging Instrument | Interest rate swaps | Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Assets	3,653	1,750
Other Assets | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Assets	18,301	25,545
Other Assets | Not Designated as Hedging Instrument | Residential mortgage loan commitments
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Assets	149	179
Other Assets | Not Designated as Hedging Instrument | Interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Assets	16,007	24,747
Other Assets | Not Designated as Hedging Instrument | Interest rate caps
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Assets	2,090	488
Other Assets | Not Designated as Hedging Instrument | Credit contracts
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Assets	55	131
Other Liabilities | Derivative Designated as Hedging Instrument | Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Liabilities	0	0
Other Liabilities | Derivative Designated as Hedging Instrument | Interest rate swaps | Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Liabilities	0	0
Other Liabilities | Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Liabilities	18,370	26,544
Other Liabilities | Not Designated as Hedging Instrument | Residential mortgage loan commitments
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Liabilities	0	0
Other Liabilities | Not Designated as Hedging Instrument | Interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Liabilities	16,158	25,855
Other Liabilities | Not Designated as Hedging Instrument | Interest rate caps
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Liabilities	2,090	488
Other Liabilities | Not Designated as Hedging Instrument | Credit contracts
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Liabilities	$ 122	$ 201