FAIR VALUE MEASUREMENTS (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Fair Value Measurements
Blended interest rate for determining fair value of nonaccrual loans (as a percent)	0.00%
Fair value of commitments	$ 0	$ 0
Financial assets:
Interest-bearing deposits	13,374	14,047
Securities available for sale	85,009	86,273
Carrying Amount
Financial assets:
Total financial assets	964,558	928,839
Financial liabilities:
Total financial liabilities	926,927	891,358
Estimated Fair Value
Financial assets:
Total financial assets	961,891	930,379
Financial liabilities:
Total financial liabilities	903,090	884,520
Level 1 | Carrying Amount
Financial assets:
Cash and cash equivalents	57,682	46,755
Level 1 | Estimated Fair Value
Financial assets:
Cash and cash equivalents	57,682	46,755
Level 2 | Carrying Amount
Financial assets:
Interest-bearing deposits	13,374	14,047
Securities available for sale	84,509	84,623
Federal Home Loan Bank stock	3,250	2,911
Financial liabilities:
Deposits	835,203	823,512
Borrowings	91,397	67,579
Level 2 | Estimated Fair Value
Financial assets:
Interest-bearing deposits	13,374	14,047
Securities available for sale	84,509	84,623
Federal Home Loan Bank stock	3,250	2,911
Financial liabilities:
Deposits	811,066	815,960
Borrowings	91,697	68,293
Significant Unobservable Inputs (Level 3) | Carrying Amount
Financial assets:
Securities available for sale	500	1,650
Net loans	803,019	776,837
Accrued interest receivable	2,224	2,016
Financial liabilities:
Accrued interest payable	327	267
Significant Unobservable Inputs (Level 3) | Estimated Fair Value
Financial assets:
Securities available for sale	500	1,650
Net loans	800,352	778,377
Accrued interest receivable	2,224	2,016
Financial liabilities:
Accrued interest payable	$ 327	$ 267