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Derivatives and Hedging Activities - Summary of Derivative Position offset in Consolidated Balance Sheets (Detail) - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Derivative Assets, Gross Amounts Recognized $ 76 $ 114
Derivative Assets, Net Amounts Recognized 76 114
Derivative Assets, Cash Collateral Pledged (Received) [1] 76 114
Derivative Liabilities, Gross Amounts Recognized 207 114
Derivative Liabilities, Net Amounts Recognized 207 114
Derivative Liabilities, Cash Collateral Pledged (Received) [1] 131 43
Derivative Liabilities, Net Amount 76 71
Fair Value Hedging [Member]    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Derivative Assets, Gross Amounts Recognized [2]   43
Derivative Assets, Net Amounts Recognized [2]   43
Derivative Assets, Cash Collateral Pledged (Received) [1],[2]   43
Derivative Liabilities, Gross Amounts Recognized [2] 80  
Derivative Liabilities, Net Amounts Recognized [2] 80  
Derivative Liabilities, Cash Collateral Pledged (Received) [1],[2] 80  
Cash Flow Hedging [Member]    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Derivative Liabilities, Gross Amounts Recognized [2] 51 43
Derivative Liabilities, Net Amounts Recognized [2] 51 43
Derivative Liabilities, Cash Collateral Pledged (Received) [1],[2] 51 43
Customer Loan Swap - Dealer Bank [Member]    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Derivative Assets, Gross Amounts Recognized [3] 76 71
Derivative Assets, Net Amounts Recognized [3] 76 71
Derivative Assets, Cash Collateral Pledged (Received) [1],[3] 76 71
Derivative Liabilities, Gross Amounts Recognized [3] 76 71
Derivative Liabilities, Net Amounts Recognized [3] 76 71
Derivative Liabilities, Net Amount [3] $ 76 $ 71
[1] The amount presented was the lesser of the amount pledged (received) or the net amount presented in the consolidated balance sheets.
[2] Interest rate swap contracts were completed with the same dealer bank. The Company maintains a master netting arrangement with the counterparty and settles collateral on a net basis for all contracts.
[3] The Company manages its net exposure on its commercial customer loan swaps by obtaining collateral as part of the normal loan policy and underwriting practices. The Company does not post collateral to its commercial customers as part of its contract.