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Derivative Instruments and Hedging Activities - Fair Value of Derivative Financial Instruments (Detail) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Other Assets | Derivative Designated as Hedging Instrument | Fair Value Hedging    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Assets   $ 1,777
Other Assets | Derivative Designated as Hedging Instrument | Interest rate swaps | Fair Value Hedging    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Assets   1,777
Other Assets | Not Designated as Hedging Instrument    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Assets $ 26,003 42,658
Other Assets | Not Designated as Hedging Instrument | Residential mortgage loan commitments    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Assets 66 55
Other Assets | Not Designated as Hedging Instrument | Interest rate swaps and caps (1)    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Assets 25,932 42,589
Other Assets | Not Designated as Hedging Instrument | Credit contracts    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Assets 5 14
Other Liabilities | Derivative Designated as Hedging Instrument | Fair Value Hedging    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Liabilities   0
Other Liabilities | Derivative Designated as Hedging Instrument | Interest rate swaps | Fair Value Hedging    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Liabilities   0
Other Liabilities | Not Designated as Hedging Instrument    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Liabilities 37,662 42,106
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 and caps (1)    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Liabilities 37,640 42,076
Other Liabilities | Not Designated as Hedging Instrument | Credit contracts    
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative Liabilities $ 22 $ 30