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Derivative Financial Instruments - Additional Information (Detail)
$ in Thousands
 3 Months Ended
Mar. 31, 2024
USD ($)
Agreement
Jun. 30, 2023
USD ($)
Derivative Instruments, Gain (Loss) [Line Items]    
Derivative assets and liabilities offset in balance sheet $ 0  
Description of Conditions Relating to Clearing of Interest rate Swaps These instruments contain language outlining collateral pledging requirements for each counterparty, in which collateral must be posted if market value exceeds certain agreed upon threshold limits. Cash or securities are pledged as collateral  
Interest-rate Swap Agreements with Customers [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Number of interest-rate swap agreements | Agreement 114  
Total notional amount of the Company's swaps $ 390,300  
Fair Value Hedges [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Total notional amount of the Company's swaps   $ 1,000,000
Weighted average fixed rate   3.80%
Derivative Notional Amount   $ 10,900
Cash Flow Hedges [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Total notional amount of the Company's swaps $ 300,000  
Weighted average fixed rate 4.20%  
Cash flow hedging transactions $ 300,000