OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
OTHER COMPREHENSIVE INCOME (LOSS)
Unrealized holding (losses) gains on available for sale securities	$ (2,489)	$ 13,315	$ (23,771)
Reclassification adjustment for losses (gains) realized in income	8	1,090	(659)
Income tax effect	1,047	(5,718)	9,698
Net change in unrealized (losses) gains on available for sale securities	(1,434)	8,687	(14,732)
Unrealized net gain (loss) arising during the period	196	(5,529)	2,871
Reclassification adjustment for amortization realized in income	358	(23)	291
Income tax effect	(174)	2,204	(1,255)
Net change in post-retirement obligation	380	(3,348)	1,907
Change in fair value of derivatives used for cash flow hedges	(1,008)	(1,249)	(259)
Reclassification adjustment for losses realized in income	657	470	271
Income tax effect	150	309	(5)
Net change in unrealized (loss) gain on cash flow hedges	(201)	(470)	7
Total	$ (1,255)	$ 4,869	$ (12,818)