v3.25.4
EMPLOYEE AND POSTRETIREMENT BENEFIT PLANS - Profit Sharing and Deferred Compensation Plans (Details)
12 Months Ended
Dec. 31, 2025
USD ($)
age
shares
Dec. 31, 2024
USD ($)
shares
Dec. 31, 2023
USD ($)
shares
Defined Contribution Plan Disclosure [Line Items]      
Matching contributions $ 1,562,000 $ 1,468,000 $ 1,419,000
Employee Stock Ownership Plan (ESOP), Diversification Feature, Age Requirement | age 55    
Deferred Compensation Arrangement with Individual, Requisite Service Period 10 years    
Employee Stock Ownership Plan (ESOP), Diversification Feature Percentage 50.00%    
Employee Stock Ownership Plan (ESOP), Policy Diversification Feature Term 6 years    
Employee Stock Ownership Plan (ESOP), Shares Repurchased | shares 0 0  
Employee Stock Ownership Plan (ESOP), Shares in ESOP, Total | shares 614,083 618,148 579,567
Employee Stock Ownership Plan (ESOP), Cash Contributions to ESOP $ 725,000 $ 665,000 $ 1,244,000
Deferred Compensation, Monthly Payments To Be Made To Executives Or His Heirs $ 1,000,000    
Deferred Compensation Arrangement with Individual, Maximum Contractual Term 10 years    
Nonqualified supplemental deferred compensation arrangement      
Defined Contribution Plan Disclosure [Line Items]      
Deferred Compensation Arrangement with Individual, Compensation Expense $ 274,000 223,000 489,000
Nonqualified supplemental deferred compensation arrangement | Accrued interest and other liabilities      
Defined Contribution Plan Disclosure [Line Items]      
Deferred compensation arrangement liability $ 4,558,000 3,164,000  
Supplemental retirement benefit to a former executive In connection with an acquisition      
Defined Contribution Plan Disclosure [Line Items]      
Deferred Compensation Liability Discount Rate 1.50%    
Supplemental retirement benefit to a former executive In connection with an acquisition | Accrued interest and other liabilities      
Defined Contribution Plan Disclosure [Line Items]      
Supplemental retirement benefit liability $ 908,000 919,000  
Supplemental retirement benefit to a former executive In connection with an acquisition | Pension And Other Employee Benefits Expenses      
Defined Contribution Plan Disclosure [Line Items]      
Deferred Compensation Arrangement with Individual, Compensation Expense 14,000 $ 14,000 $ 13,000
Susquehanna Deferred Compensation Arrangements      
Defined Contribution Plan Disclosure [Line Items]      
Deferred compensation arrangement liability 1,853,000    
Pension and Other Postretirement Benefits Cost (Reversal of Cost), Total $ 15,000    
Susquehanna Deferred Compensation Arrangements | Minimum      
Defined Contribution Plan Disclosure [Line Items]      
Deferred Compensation Liability Discount Rate 3.93%    
Susquehanna Deferred Compensation Arrangements | Maximum      
Defined Contribution Plan Disclosure [Line Items]      
Deferred Compensation Liability Discount Rate 4.73%    
Susquehanna Deferred Compensation Arrangements - One Officer      
Defined Contribution Plan Disclosure [Line Items]      
Payment in 2025 $ 35,000    
Payment commitment in 2026 206,000    
Payment commitments in 2027 206,000    
Payment commitments in 2028 $ 172,000    
Susquehanna Deferred Compensation Arrangements - Other Officers      
Defined Contribution Plan Disclosure [Line Items]      
Deferred Compensation Arrangement with Individual, Maximum Contractual Term 15 years