FAIR VALUE OF ASSETS AND LIABILITIES - Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financial assets:
Total available for sale securities	$ 212,181	$ 182,139
Securities held to maturity	4,083	4,151
Interest rate swaps - Assets	688	2,114
Financial liabilities:
Interest rate swaps - liability	3,890	779
Carrying Amount
Financial assets:
Cash and cash equivalents	43,686	26,678
Time deposits with other banks	200	200
Total available for sale securities	212,181	182,139
Securities held to maturity	4,012	4,078
Other bank stock	12,498	11,764
Loans receivable, net of allowance	1,618,579	1,466,000
Accrued interest receivable	6,175	6,546
Interest rate swaps - Assets	688	2,114
Financial liabilities:
Non-maturity deposits	971,653	965,065
Time deposits	553,388	388,874
Short-term borrowings	193,000	175,295
Long-term borrowings	40,114	44,611
Subordinated debentures	27,869	27,859
Accrued interest payable	1,466	1,480
Interest rate swaps - liability	3,890	779
Fair Value
Financial assets:
Cash and cash equivalents	43,686	26,678
Time deposits with other banks	200	200
Total available for sale securities	212,181	182,139
Securities held to maturity	4,083	4,152
Other bank stock	12,498	11,764
Loans receivable, net of allowance	1,605,295	1,428,094
Accrued interest receivable	6,175	6,546
Interest rate swaps - Assets	688	2,114
Financial liabilities:
Non-maturity deposits	971,653	965,065
Time deposits	551,886	383,264
Short-term borrowings	193,081	175,366
Long-term borrowings	40,228	44,365
Subordinated debentures	26,930	26,840
Accrued interest payable	1,466	1,480
Interest rate swaps - liability	3,890	779
Quoted Prices in Active Markets for Identical Assets (Level I)
Financial assets:
Cash and cash equivalents	43,686	26,678
Time deposits with other banks	0	0
Total available for sale securities	0	0
Securities held to maturity	0	0
Other bank stock	0	0
Loans receivable, net of allowance	0	0
Accrued interest receivable	0	0
Interest rate swaps - Assets	0	0
Financial liabilities:
Non-maturity deposits	0	0
Time deposits	0	0
Short-term borrowings	193,081	175,366
Long-term borrowings	0	0
Subordinated debentures	0	0
Accrued interest payable	0	0
Interest rate swaps - liability	0	0
Significant Other Observable Inputs (Level II)
Financial assets:
Cash and cash equivalents	0	0
Time deposits with other banks	200	200
Total available for sale securities	208,580	182,139
Securities held to maturity	2,593	4,152
Other bank stock	12,498	11,764
Loans receivable, net of allowance	0	0
Accrued interest receivable	6,175	6,546
Interest rate swaps - Assets	688	2,114
Financial liabilities:
Non-maturity deposits	971,653	965,065
Time deposits	551,886	383,264
Short-term borrowings	0	0
Long-term borrowings	40,228	44,365
Subordinated debentures	26,930	26,840
Accrued interest payable	1,466	1,480
Interest rate swaps - liability	3,890	779
Significant Unobservable Inputs (Level III)
Financial assets:
Cash and cash equivalents	0	0
Time deposits with other banks	0	0
Total available for sale securities	3,601	0
Securities held to maturity	1,490	0
Other bank stock	0	0
Loans receivable, net of allowance	1,605,295	1,428,094
Accrued interest receivable	0	0
Interest rate swaps - Assets	0	0
Financial liabilities:
Non-maturity deposits	0	0
Time deposits	0	0
Short-term borrowings	0	0
Long-term borrowings	0	0
Subordinated debentures	0	0
Accrued interest payable	0	0
Interest rate swaps - liability	$ 0	$ 0