ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Changes in Accumulated Other Comprehensive Income By Component) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Unrealized Gains and Losses on Available- for-Sales Securities, Opening Balance	$ (4,796)	$ 784
Unrealized Gains and Losses on Available- for-Sales Securities, Other comprehensive income before reclassification	8,663	(7,132)
Unrealized Gains and Losses on Available- for-Sales Securities, Amounts reclassified from accumulated other comprehensive income (loss)	(23)	6
Unrealized Gains and Losses on Available- for-Sales Securities, Net current period other comprehensive income	8,640	(7,126)
Unrealized Gains and Losses on Available- for-Sales Securities, Ending Balance	3,844	(6,270)
Defined Benefit Pension Items, Opening Balance	(1,395)	(1,454)
Defined Benefit Pension Items, Other comprehensive income before reclassification	0	0
Defined Benefit Pension Items, Amounts reclassified from accumulated other comprehensive income (loss)	38	49
Net of tax amount	38	49
Defined Benefit Pension Items, Ending Balance	(1,357)	(1,718)
Total, Opening Balance	(6,191)	(670)
Total, Other comprehensive income (loss) before reclassification	8,663	(7,132)
Total, Amounts reclassified from accumulated other comprehensive income (loss)	15	55
Total other comprehensive income, net of tax	8,678	(7,077)
Total, Ending Balance	$ 2,487	(7,988)
Accounting Standards Update 2018-02 [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax		140
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax		(313)
Other Comprehensive Income Loss, Adjustment, Net of Tax		(173)
Accounting Standards Update 2016-01 [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax		(68)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax		0
Other Comprehensive Income Loss, Adjustment, Net of Tax		$ (68)