v3.25.2
FAIR VALUE DISCLOSURES - Estimated Fair Values of Financial Instruments (Details) - USD ($)
$ in Thousands
 6 Months Ended 12 Months Ended
Jun. 30, 2025
Dec. 31, 2024
Financial assets    
Investment securities held-to-maturity $ 72,994 $ 76,960
Other investments (1) 122,322 114,598
Interest Receivable 52,108 53,200
Deposits    
Noninterest-bearing 3,131,926 3,132,381
Savings 4,979,124 4,948,768
Time 3,201,711 3,152,265
Federal Home Loan Bank Stock and Federal Reserve Bank Stock $ 110,500 $ 103,000
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Discount Rate 11.53% 11.52%
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Prepayment Speed 6.15% 5.96%
Impaired Commercial And Commercial Real Estate Loans Member    
Deposits    
Principal Amount of Commercial and Commercial Real Estate Loans $ 27,800 $ 3,900
Allowance for Loan and Lease Losses, Real Estate 4,900 2,100
Carrying value    
Financial assets    
Cash and interest-bearing deposits with other banks 780,360 904,486
Investment securities held-to-maturity 72,994 76,960
Other investments (1) 11,776 11,570
Loans and leases 11,627,674 11,604,987
Interest Receivable 67,110 67,420
Deposits    
Deposits 14,369,993 14,329,138
Short-term borrowings 684,699 755,452
Long-term debt 344,955 347,509
Interest Payable 36,403 43,411
Fair value    
Financial assets    
Cash and interest-bearing deposits with other banks 780,360 904,486
Investment securities held-to-maturity 66,244 68,989
Other investments (1) 11,776 11,570
Loans and leases 11,448,914 11,417,941
Interest Receivable 67,110 67,420
Deposits    
Deposits 14,359,704 14,322,815
Short-term borrowings 684,699 755,452
Long-term debt 351,273 346,613
Interest Payable 36,403 43,411
Fair Value, Inputs, Level 1 [Member] | Fair value    
Financial assets    
Cash and interest-bearing deposits with other banks 780,360 904,486
Investment securities held-to-maturity 0 0
Other investments (1) 1,736 1,530
Loans and leases 0 0
Interest Receivable 0 0
Deposits    
Deposits 0 0
Short-term borrowings 684,699 755,452
Long-term debt 0 0
Interest Payable 5,207 4,663
Fair Value, Inputs, Level 2 [Member] | Fair value    
Financial assets    
Cash and interest-bearing deposits with other banks 0 0
Investment securities held-to-maturity 66,244 68,989
Other investments (1) 40 40
Loans and leases 0 0
Interest Receivable 15,002 14,263
Deposits    
Deposits 14,359,704 14,322,815
Short-term borrowings 0 0
Long-term debt 351,273 346,613
Interest Payable 31,196 38,748
Fair Value, Inputs, Level 3 [Member] | Fair value    
Financial assets    
Cash and interest-bearing deposits with other banks 0 0
Investment securities held-to-maturity 0 0
Other investments (1) 10,000 10,000
Loans and leases 11,448,914 11,417,941
Interest Receivable   53,157
Deposits    
Deposits 0 0
Short-term borrowings 0 0
Long-term debt 0 0
Interest Payable $ 0 $ 0