OTHER COMPREHENSIVE INCOME - COMPONENTS (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Available for Sale Securities:
Change in unrealized gain (loss) on available-for-sale debt securities (2018), debt and equity securities (2017)	$ (2,117)	$ 706
Adjustment for adoption of ASU 2016-01	(428)
Change in unrealized gain on available-for-sale debt security for which a portion of an other-than-temporary impairment has been recognized in earnings	(2)	53
Net unrealized losses (gains)	(2,547)	759
Tax effect	535	(266)
Net of tax	(2,012)	493
Cash Flow Hedges:
Change in fair value of derivatives used for cash flow hedges	199	28
Reclassification amount for derivative losses realized in income	26	66
Net unrealized gains	225	94
Tax effect	(46)	(33)
Net of tax	179	61
Total other comprehensive (loss) income, net of tax	$ (1,833)	$ 554