LOANS, ACTIVITY IN MORTGAGE SERVICING RIGHTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Servicing Asset at Amortized Cost, Balance [Roll Forward]
Balance, beginning of year	$ 428	$ 488	$ 591
Amount capitalized to mortgage servicing rights	91	109	78
Amortization of mortgage servicing rights	(123)	(169)	(181)
Balance, end of year	$ 396	$ 428	$ 488