v3.26.3
DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - Effect of cash flow hedging and fair value (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Location, Statement of Income, Balance [Axis]: us-gaap:InterestAndDividendIncomeSecurities        
DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES        
Income and expense line items presented in the consolidated statements of income $ 6,527 $ 6,355 $ 19,050 $ 17,112
Location, Statement of Income, Balance [Axis]: us-gaap:InterestAndFeeIncomeLoansAndLeases        
DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES        
Income and expense line items presented in the consolidated statements of income 51,111 48,426 148,920 132,956
Location, Statement of Income, Balance [Axis]: us-gaap:InterestExpenseBorrowings        
DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES        
Income and expense line items presented in the consolidated statements of income 2,578 2,544 9,416 8,845
Location, Statement of Income, Balance [Axis]: us-gaap:InterestExpenseDeposits        
DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES        
Income and expense line items presented in the consolidated statements of income 15,103 16,419 44,630 47,442
Location, Statement of Income, Balance [Axis]: us-gaap:NoninterestIncome        
DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES        
Income and expense line items presented in the consolidated statements of income 10,847 10,567 32,993 24,131
Interest rate swap on wholesale funding | Cash flow hedges | Location, Statement of Income, Balance [Axis]: us-gaap:InterestExpenseBorrowings        
DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES        
Gain (loss) on cash flow hedges       269
Interest rate swap on variable rate loans | Cash flow hedges | Location, Statement of Income, Balance [Axis]: us-gaap:InterestAndFeeIncomeLoansAndLeases        
DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES        
Gain (loss) on cash flow hedges   (466) (339) (1,380)
Interest rate swap on securities | Fair Value Hedging | Location, Statement of Income, Balance [Axis]: us-gaap:InterestAndDividendIncomeSecurities        
DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES        
Gain (loss) on fair value hedges $ 218 $ 281 $ 638 $ 834