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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
Dec. 31, 2023
Dec. 31, 2022
Assets Sold under Agreements to Repurchase [Line Items]    
Total borrowings $ 142,085 $ 131,146
Overnight and Continuous    
Assets Sold under Agreements to Repurchase [Line Items]    
Total borrowings 142,085 131,146
U.S. government-sponsored enterprises    
Assets Sold under Agreements to Repurchase [Line Items]    
Total borrowings 0 5,322
U.S. government-sponsored enterprises | Overnight and Continuous    
Assets Sold under Agreements to Repurchase [Line Items]    
Total borrowings 0 5,322
Mortgage-backed securities    
Assets Sold under Agreements to Repurchase [Line Items]    
Total borrowings 0 5,153
Mortgage-backed securities | Overnight and Continuous    
Assets Sold under Agreements to Repurchase [Line Items]    
Total borrowings 0 5,153
State and political subdivisions    
Assets Sold under Agreements to Repurchase [Line Items]    
Total borrowings 0 117,674
State and political subdivisions | Overnight and Continuous    
Assets Sold under Agreements to Repurchase [Line Items]    
Total borrowings 0 117,674
Other securities    
Assets Sold under Agreements to Repurchase [Line Items]    
Total borrowings 142,085 2,997
Other securities | Overnight and Continuous    
Assets Sold under Agreements to Repurchase [Line Items]    
Total borrowings $ 142,085 $ 2,997