v3.26.1
FAIR VALUE MEASUREMENT AND DISCLOSURE (Schedule of Carrying Amounts and Estimated Fair Value for Financial Instrument Assets and Liabilities) (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Financial assets:    
Held-to-maturity securities, at amortized cost $ 473,257 $ 485,292
Held-to-maturity securities, fair value 444,404 457,821
Cash Surrender Value, Fair Value Disclosure 112,492 112,119
Mortgage servicing rights 4,775 4,665
Financial liabilities:    
Time deposits 648,213 675,713
Short-term Debt, Fair Value 513,017 581,378
Total short-term borrowings 513,429 581,780
Long-term borrowings 1,000  
Junior subordinated debentures 51,773 51,401
Long-term Debt, Fair Value 840 841
Commercial Real Estate    
Financial assets:    
Loans receivable, net of allowance 2,122,527 2,094,447
Commercial    
Financial assets:    
Loans receivable, net of allowance 401,248 402,224
Residential real estate    
Financial assets:    
Loans receivable, net of allowance 1,743,318 1,790,372
Home equity    
Financial assets:    
Loans receivable, net of allowance 336,547 321,156
Consumer    
Financial assets:    
Loans receivable, net of allowance 14,573 15,622
Readily Available Market Prices (Level 1)    
Financial assets:    
Held-to-maturity securities, fair value 0 0
Cash Surrender Value, Fair Value Disclosure 0
Mortgage servicing rights 0 0
Financial liabilities:    
Time deposits 0 0
Short-term Debt, Fair Value 0 0
Junior subordinated debentures 0 0
Long-term Debt, Fair Value 0 0
Readily Available Market Prices (Level 1) | Commercial Real Estate    
Financial assets:    
Loans receivable, net of allowance 0 0
Readily Available Market Prices (Level 1) | Commercial    
Financial assets:    
Loans receivable, net of allowance 0 0
Readily Available Market Prices (Level 1) | Residential real estate    
Financial assets:    
Loans receivable, net of allowance 0 0
Readily Available Market Prices (Level 1) | Home equity    
Financial assets:    
Loans receivable, net of allowance 0 0
Readily Available Market Prices (Level 1) | Consumer    
Financial assets:    
Loans receivable, net of allowance 0 0
Observable Market Data (Level 2)    
Financial assets:    
Held-to-maturity securities, fair value 444,404 457,821
Cash Surrender Value, Fair Value Disclosure 112,492 112,119
Mortgage servicing rights 0 0
Financial liabilities:    
Time deposits 648,213 675,713
Short-term Debt, Fair Value 513,017 581,378
Junior subordinated debentures 51,773 51,401
Long-term Debt, Fair Value 840 841
Observable Market Data (Level 2) | Commercial Real Estate    
Financial assets:    
Loans receivable, net of allowance 0 0
Observable Market Data (Level 2) | Commercial    
Financial assets:    
Loans receivable, net of allowance 0 0
Observable Market Data (Level 2) | Residential real estate    
Financial assets:    
Loans receivable, net of allowance 0 0
Observable Market Data (Level 2) | Home equity    
Financial assets:    
Loans receivable, net of allowance 0 0
Observable Market Data (Level 2) | Consumer    
Financial assets:    
Loans receivable, net of allowance 0 0
Company Determined Fair Value (Level 3)    
Financial assets:    
Held-to-maturity securities, fair value 0 0
Cash Surrender Value, Fair Value Disclosure 0 0
Mortgage servicing rights 4,775 4,665
Financial liabilities:    
Time deposits 0 0
Short-term Debt, Fair Value 0 0
Junior subordinated debentures 0 0
Long-term Debt, Fair Value 0 0
Company Determined Fair Value (Level 3) | Commercial Real Estate    
Financial assets:    
Loans receivable, net of allowance 2,122,527 2,094,447
Company Determined Fair Value (Level 3) | Commercial    
Financial assets:    
Loans receivable, net of allowance 401,248 402,224
Company Determined Fair Value (Level 3) | Residential real estate    
Financial assets:    
Loans receivable, net of allowance 1,743,318 1,790,372
Company Determined Fair Value (Level 3) | Home equity    
Financial assets:    
Loans receivable, net of allowance 336,547 321,156
Company Determined Fair Value (Level 3) | Consumer    
Financial assets:    
Loans receivable, net of allowance 14,573 15,622
Carrying Amount    
Financial assets:    
Held-to-maturity securities, at amortized cost 473,257 485,292
Cash Surrender Value, Fair Value Disclosure 112,492 112,119
Mortgage servicing rights 2,719 2,796
Financial liabilities:    
Time deposits 652,002 679,087
Short-term Debt, Fair Value 250,000 581,780
Junior subordinated debentures 61,590 61,515
Long-term Debt, Fair Value   1,000
Carrying Amount | Commercial Real Estate    
Financial assets:    
Loans receivable, net of allowance 2,173,293 2,162,472
Carrying Amount | Commercial    
Financial assets:    
Loans receivable, net of allowance 408,606 411,722
Carrying Amount | Residential real estate    
Financial assets:    
Loans receivable, net of allowance 1,980,314 2,000,090
Carrying Amount | Home equity    
Financial assets:    
Loans receivable, net of allowance 339,064 328,306
Carrying Amount | Consumer    
Financial assets:    
Loans receivable, net of allowance $ 16,164 $ 17,272