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Securities Sold Under Agreements to Repurchase - Summary of Remaining Contractual Maturity of Securities Sold Under Agreements to Repurchase (Detail) - USD ($)
$ in Thousands
Mar. 31, 2025
Dec. 31, 2024
Assets Sold under Agreements to Repurchase [Line Items]    
Total borrowings $ 161,401 $ 162,350
Mortgage-backed securities    
Assets Sold under Agreements to Repurchase [Line Items]    
Total borrowings 56,625 48,056
State and political subdivisions    
Assets Sold under Agreements to Repurchase [Line Items]    
Total borrowings 33,076 37,831
Other securities    
Assets Sold under Agreements to Repurchase [Line Items]    
Total borrowings 71,700 76,463
Overnight and Continuous    
Assets Sold under Agreements to Repurchase [Line Items]    
Total borrowings 161,401 162,350
Overnight and Continuous | Mortgage-backed securities    
Assets Sold under Agreements to Repurchase [Line Items]    
Total borrowings 56,625 48,056
Overnight and Continuous | State and political subdivisions    
Assets Sold under Agreements to Repurchase [Line Items]    
Total borrowings 33,076 37,831
Overnight and Continuous | Other securities    
Assets Sold under Agreements to Repurchase [Line Items]    
Total borrowings $ 71,700 $ 76,463