v3.25.2
Federal Funds Purchased and Securities Sold Under Agreements to Repurchase - Schedule of Remaining Contractual Maturity in Repurchase Agreements (Detail) - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements, Remaining contractual maturity of the agreements $ 27,562 $ 27,218
Total 27,562 27,218
Overnight & Continuous [Member]    
Assets Sold under Agreements to Repurchase [Line Items]    
Total 344  
Greater Than 90 Days [Member]    
Assets Sold under Agreements to Repurchase [Line Items]    
Total 27,218 27,218
US Treasury & Agency Securities [Member]    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements, Remaining contractual maturity of the agreements 27,562 27,218
US Treasury & Agency Securities [Member] | Overnight & Continuous [Member]    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements, Remaining contractual maturity of the agreements 344  
US Treasury & Agency Securities [Member] | Greater Than 90 Days [Member]    
Assets Sold under Agreements to Repurchase [Line Items]    
Repurchase agreements, Remaining contractual maturity of the agreements $ 27,218 $ 27,218