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Short-Term and Other Borrowings - Summary of Federal Funds Purchased, Securities Sold Under Agreements to Repurchase and Other Short-term Borrowings (Detail) - Short Term Borrowings, FHLB advances [Member] - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
Short-term Debt [Line Items]        
Outstanding balance $ 142,000,000 $ 142,000,000   $ 393,700,000
Interest rate on balance 5.17% 5.17%   4.24%
Maximum indebtedness $ 302,000,000 $ 540,000,000 $ 15,800,000  
Average balance $ 242,395,000 $ 306,952,000 $ 178,000  
Average rate paid 5.15% 4.84% 0.30%