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FAIR VALUE MEASUREMENT AND DISCLOSURE (Schedule of Carrying Amounts and Estimated Fair Value for Financial Instrument Assets and Liabilities) (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Financial assets:
Held-to-maturity securities, at amortized cost	$ 534,309	$ 1,291
Held-to-maturity securities, fair value	491,759	1,380
Mortgage servicing rights	4,466	3,310
Financial liabilities:
Time deposits	270,794	409,264
Short-term Debt, Fair Value	420,608	211,586
Subordinated debentures	31,918	33,248
Commercial Real Estate
Financial assets:
Loans receivable, net of allowance	1,517,911	1,435,794
Commercial
Financial assets:
Loans receivable, net of allowance	412,670	356,463
SBA PPP
Financial assets:
Loans receivable, net of allowance	704	37,133
Residential real estate
Financial assets:
Loans receivable, net of allowance	1,424,504	1,297,592
Home equity
Financial assets:
Loans receivable, net of allowance	238,723	205,920
Consumer
Financial assets:
Loans receivable, net of allowance	18,277	17,551
Readily Available Market Prices (Level 1)
Financial assets:
Held-to-maturity securities, fair value	0	0
Mortgage servicing rights	0	0
Financial liabilities:
Time deposits	0	0
Short-term Debt, Fair Value	0	0
Subordinated debentures	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) | SBA PPP
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	491,759	1,380
Mortgage servicing rights	0	0
Financial liabilities:
Time deposits	270,794	409,264
Short-term Debt, Fair Value	420,608	211,586
Subordinated debentures	31,918	33,248
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) | SBA PPP
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
Mortgage servicing rights	4,466	3,310
Financial liabilities:
Time deposits	0	0
Short-term Debt, Fair Value	0	0
Subordinated debentures	0	0
Company Determined Fair Value (Level 3) | Commercial Real Estate
Financial assets:
Loans receivable, net of allowance	1,517,911	1,435,794
Company Determined Fair Value (Level 3) | Commercial
Financial assets:
Loans receivable, net of allowance	412,670	356,463
Company Determined Fair Value (Level 3) | SBA PPP
Financial assets:
Loans receivable, net of allowance	704	37,133
Company Determined Fair Value (Level 3) | Residential real estate
Financial assets:
Loans receivable, net of allowance	1,424,504	1,297,592
Company Determined Fair Value (Level 3) | Home equity
Financial assets:
Loans receivable, net of allowance	238,723	208,934
Company Determined Fair Value (Level 3) | Consumer
Financial assets:
Loans receivable, net of allowance	18,277	17,551
Carrying Amount
Financial assets:
Held-to-maturity securities, at amortized cost	534,309	1,291
Mortgage servicing rights	2,470	2,471
Financial liabilities:
Time deposits	279,603	409,668
Short-term Debt, Fair Value	421,101	211,608
Subordinated debentures	44,331	44,331
Carrying Amount | Commercial Real Estate
Financial assets:
Loans receivable, net of allowance	1,543,107	1,474,087
Carrying Amount | Commercial
Financial assets:
Loans receivable, net of allowance	418,110	359,512
Carrying Amount | SBA PPP
Financial assets:
Loans receivable, net of allowance	684	35,934
Carrying Amount | Residential real estate
Financial assets:
Loans receivable, net of allowance	1,610,324	1,300,314
Carrying Amount | Home equity
Financial assets:
Loans receivable, net of allowance	231,507	208,934
Carrying Amount | Consumer
Financial assets:
Loans receivable, net of allowance	$ 20,406	$ 19,437

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