Quarterly report [Sections 13 or 15(d)]

Derivatives and Hedging Activities - Effect of Cash Flow Hedge Accounting on Accumulated Other Comprehensive Income and the Consolidated Statements of Income (Details)

v3.26.3
Derivatives and Hedging Activities - Effect of Cash Flow Hedge Accounting on Accumulated Other Comprehensive Income and the Consolidated Statements of Income (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of Gain or (Loss) Recognized in OCI on Derivative $ 901 $ (94) $ 844 $ (139)
Amount of Gain or (Loss) Recognized in OCI Included Component 901 (94) 844 (139)
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (2) (241) 80 (734)
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income Included Component   (241) 82 (734)
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income - Excluded Component (2)   (2)  
Pay-Fixed Interest Rate Swap Related to State of California Time Deposits        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of Gain or (Loss) Recognized in OCI on Derivative 853   853 (139)
Amount of Gain or (Loss) Recognized in OCI Included Component 853   853 (139)
Pay-Fixed Interest Rate Swap Related to State of California Time Deposits | Location, Statement of Income, Balance [Axis]: us-gaap:InterestAndDividendIncomeOperating        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income       (734)
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income Included Component       $ (734)
Interest Rate Cap Related to Trust Preferred Securities        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of Gain or (Loss) Recognized in OCI on Derivative 48   48  
Amount of Gain or (Loss) Recognized in OCI Included Component 48   48  
Interest Rate Cap Related to Trust Preferred Securities | Location, Statement of Income, Balance [Axis]: us-gaap:InterestExpenseOperating        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (2)   (2)  
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income - Excluded Component $ (2)   (2)  
Pay-Fixed Interest Rate Swaps Related to Customer Loans        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of Gain or (Loss) Recognized in OCI on Derivative   (94) (57)  
Amount of Gain or (Loss) Recognized in OCI Included Component   (94) (57)  
Pay-Fixed Interest Rate Swaps Related to Customer Loans | Location, Statement of Income, Balance [Axis]: us-gaap:InterestAndDividendIncomeOperating        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income   (241) 82  
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income Included Component   $ (241) $ 82