PENSION AND OTHER POSTRETIREMENT PLANS (Summary Of Benefit Plan) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Pension Plans, Defined Benefit [Member]
Change in benefit obligation:
Beginning benefit obligation	$ 2,841	$ 2,795
Interest cost	104	105	$ 103
Actuarial (gain)/loss	134	256
Benefits paid	(217)	(315)
Ending benefit obligation	2,862	2,841	2,795
Change in plan assets (primarily equity and fixed income investments and money market funds), at fair value:
Beginning plan assets	2,063	1,910
Actual return	313	151
Employer contribution	197	317
Benefits paid	(217)	(315)
Ending plan assets	2,356	2,063	1,910
Funded status at end of year	(506)	(778)
Supplemental Employee Retirement Plans, Defined Benefit [Member]
Change in benefit obligation:
Beginning benefit obligation	1,163	1,223
Interest cost	40	45	46
Actuarial (gain)/loss	20	32
Benefits paid	(137)	(137)
Ending benefit obligation	1,086	1,163	1,223
Change in plan assets (primarily equity and fixed income investments and money market funds), at fair value:
Beginning plan assets	1,000	988
Actual return	144	73
Employer contribution	40	76
Benefits paid	(137)	(137)
Ending plan assets	1,047	1,000	$ 988
Funded status at end of year	$ (39)	$ (163)