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, 2020	Dec. 31, 2019
Financial assets:
Held-to-maturity securities, at amortized cost		$ 1,298	$ 1,302
Debt Securities, Held-to-maturity, Fair Value		1,403	1,359
Mortgage servicing rights		1,411	1,496
Financial liabilities:
Time deposits		508,785	594,881
Short-term Debt, Fair Value		210,030	268,631
Long-term Debt, Fair Value		25,465	10,002
Subordinated debentures		46,032	50,171
Residential Real Estate
Financial assets:
Loans receivable, net of allowance	[1]	1,054,587	1,066,544
Commercial Real Estate
Financial assets:
Loans receivable, net of allowance	[1]	1,282,149	1,196,297
Commercial
Financial assets:
Loans receivable, net of allowance	[1],[2]	364,655	431,892
Home Equity
Financial assets:
Loans receivable, net of allowance	[1]	271,416	293,565
Consumer
Financial assets:
Loans receivable, net of allowance	[1]	20,499	23,355
SBA PPP Portfolio Segment
Financial assets:
Loans receivable, net of allowance		229,137
Readily Available Market Prices (Level 1)
Financial assets:
Debt Securities, Held-to-maturity, Fair Value		0	0
Mortgage servicing rights		0	0
Financial liabilities:
Time deposits		0	0
Short-term Debt, Fair Value		0	0
Long-term Debt, Fair Value		0	0
Subordinated debentures		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) | 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) | 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
Readily Available Market Prices (Level 1) | SBA PPP Portfolio Segment
Financial assets:
Loans receivable, net of allowance		0
Observable Market Data (Level 2)
Financial assets:
Debt Securities, Held-to-maturity, Fair Value		1,403	1,359
Mortgage servicing rights		0	0
Financial liabilities:
Time deposits		508,785	594,881
Short-term Debt, Fair Value		210,030	268,631
Long-term Debt, Fair Value		25,465	10,002
Subordinated debentures		46,032	50,171
Observable Market Data (Level 2) | Residential Real Estate
Financial assets:
Loans receivable, net of allowance		0	0
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) | 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
Observable Market Data (Level 2) | SBA PPP Portfolio Segment
Financial assets:
Loans receivable, net of allowance		0
Company Determined Fair Value (Level 3)
Financial assets:
Debt Securities, Held-to-maturity, Fair Value		0	0
Mortgage servicing rights		1,411	1,496
Financial liabilities:
Time deposits		0	0
Short-term Debt, Fair Value		0	0
Long-term Debt, Fair Value		0	0
Subordinated debentures		0	0
Company Determined Fair Value (Level 3) | Residential Real Estate
Financial assets:
Loans receivable, net of allowance	[1]	1,054,587	1,066,544
Company Determined Fair Value (Level 3) | Commercial Real Estate
Financial assets:
Loans receivable, net of allowance	[1]	1,282,149	1,196,297
Company Determined Fair Value (Level 3) | Commercial
Financial assets:
Loans receivable, net of allowance	[1],[2]	364,655	431,892
Company Determined Fair Value (Level 3) | Home Equity
Financial assets:
Loans receivable, net of allowance	[1]	271,416	293,565
Company Determined Fair Value (Level 3) | Consumer
Financial assets:
Loans receivable, net of allowance	[1]	20,499	23,355
Company Determined Fair Value (Level 3) | SBA PPP Portfolio Segment
Financial assets:
Loans receivable, net of allowance		229,137
Carrying Amount
Financial assets:
Held-to-maturity securities, at amortized cost		1,298	1,302
Mortgage servicing rights		1,143	877
Financial liabilities:
Time deposits		505,451	595,549
Short-term Debt, Fair Value		210,055	268,809
Long-term Debt, Fair Value		25,000	10,000
Subordinated debentures		59,306	59,080
Carrying Amount | Residential Real Estate
Financial assets:
Loans receivable, net of allowance	[1]	1,035,397	1,064,532
Carrying Amount | Commercial Real Estate
Financial assets:
Loans receivable, net of allowance	[1]	1,314,204	1,230,983
Carrying Amount | Commercial
Financial assets:
Loans receivable, net of allowance	[1],[2]	371,011	438,716
Carrying Amount | Home Equity
Financial assets:
Loans receivable, net of allowance	[1]	271,720	310,356
Carrying Amount | Consumer
Financial assets:
Loans receivable, net of allowance	[1]	22,373	$ 25,265
Carrying Amount | SBA PPP Portfolio Segment
Financial assets:
Loans receivable, net of allowance		$ 223,723

[1] (1)    The presented carrying amount is net of the allocated ALL.

[2] (2)    Includes the HPFC loan portfolio.