FAIR VALUE OF FINANCIAL INSTRUMENTS - Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Financial assets:
Total available for sale securities	$ 232,205	$ 212,181
Securities held to maturity	6,399	4,083
Interest rate swaps - Assets	0	689
Financial liabilities:
Derivatives in Liability Position	17,136	3,890
Carrying Amount
Financial assets:
Cash and cash equivalents	40,305	43,686
Time deposits with other banks	200	200
Total available for sale securities	232,205	212,181
Securities held to maturity	6,339	4,012
Other bank stock	12,487	12,498
Loans receivable, net of allowance	1,674,271	1,618,579
Accrued interest receivable	6,856	6,175
Interest rate swaps - Assets		689
Financial liabilities:
Non-maturity deposits	1,021,120	971,653
Time deposits	577,431	553,388
Short-term borrowings	196,145	193,000
Long-term borrowings	34,127	40,114
Subordinated debentures	27,871	27,869
Accrued interest payable	1,670	1,466
Derivatives in Liability Position	17,136	3,890
Fair Value
Financial assets:
Cash and cash equivalents	40,305	43,686
Time deposits with other banks	200	200
Total available for sale securities	232,205	212,181
Securities held to maturity	6,399	4,083
Other bank stock	12,487	12,498
Loans receivable, net of allowance	1,750,798	1,605,295
Accrued interest receivable	6,856	6,175
Interest rate swaps - Assets		689
Financial liabilities:
Non-maturity deposits	1,021,120	971,653
Time deposits	574,876	551,886
Short-term borrowings	196,609	193,081
Long-term borrowings	34,779	40,228
Subordinated debentures	28,884	26,930
Accrued interest payable	1,670	1,466
Derivatives in Liability Position	17,136	3,890
Quoted Prices in Active Markets for Identical Assets (Level I)
Financial assets:
Cash and cash equivalents	40,305	43,686
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
Financial liabilities:
Non-maturity deposits	0	0
Time deposits	0	0
Short-term borrowings	196,609	193,081
Long-term borrowings	0	0
Subordinated debentures	0	0
Accrued interest payable	0	0
Derivatives in Liability Position		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	228,689	208,580
Securities held to maturity	3,265	2,593
Other bank stock	12,487	12,498
Loans receivable, net of allowance	0	0
Accrued interest receivable	6,856	6,175
Interest rate swaps - Assets		689
Financial liabilities:
Non-maturity deposits	1,021,120	971,653
Time deposits	574,876	551,886
Short-term borrowings	0	0
Long-term borrowings	34,779	40,228
Subordinated debentures	28,884	26,930
Accrued interest payable	1,670	1,466
Derivatives in Liability Position	17,136	3,890
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	3,516	3,601
Securities held to maturity	3,134	1,490
Other bank stock	0	0
Loans receivable, net of allowance	1,750,798	1,605,295
Accrued interest receivable	0	0
Interest rate swaps - Assets		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
Derivatives in Liability Position		$ 0