SECURITIES AVAILABLE FOR SALE - AMORTIZED COST AND FAIR VALUE BY CONTRACTUAL MATURITY (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Amortized Cost
Due in one year or less	$ 3,300
Due after one year through five years	22,097
Due after five years through ten years	55,715
Due after ten years	45,459
Securities due at a single maturity date	126,571
Amortized Cost	275,218	$ 263,667
Fair Value
Due in one year or less	3,299
Due after one year through five years	22,486
Due after five years through ten years	55,829
Due after ten years	46,046
Securities due at a single maturity date	127,660
Fair Value	273,770	264,212
Sales of securities
Proceeds from sales of securities, available for sale	23,888	21,627	$ 73,985
Gross gains realized on sales of securities	317	425,000	1,400
Gross losses realized on sales of securities	30	13	400
Tax provision related to realized gains	98	140	$ 328
Carrying value of securities pledged	252,400	246,200
Mortgage-backed - residential
Amortized Cost
Amortized Cost	148,327	124,834
Fair Value
Fair Value	145,770	123,043
Equity securities
Amortized Cost
Amortized Cost	320	320
Fair Value
Fair Value	$ 340	$ 344