DEFERRED COMPENSATION PLAN (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
DEFERRED COMPENSATION PLAN
Liability for vested benefits under the plan	$ 113,000	$ 179,000
Cash surrender value of life insurance policies of the plan participants	1,465,000	1,398,000
Deferred compensation expense	$ 65,000	77,000	$ 27,000
Minimum
DEFERRED COMPENSATION PLAN
Original contractual term	10 years
Maximum
DEFERRED COMPENSATION PLAN
Original contractual term	15 years
PFC
DEFERRED COMPENSATION PLAN
Liability for vested benefits under the plan	$ 1,038,000	1,124,000
Cash surrender value of life insurance policies of the plan participants	$ 1,741,000	$ 1,722,000