PENSION AND OTHER POSTRETIREMENT PLANS (Components of Net Periodic Benefit Cost) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Net pension expense:
Net loss	$ 151	$ 325	$ 654
Pension Plans, Defined Benefit [Member]
Net pension expense:
Service cost	0	0	0
Interest cost	105	103	119
Expected return on plan assets	(139)	(139)	(125)
Recognized net actuarial loss	135	162	117
Settlement cost	128	78	0
Net pension expense	229	204	111
Net loss	122	203	402
Amortization of net loss	(135)	(162)	(117)
Total recognized in other comprehensive income	(13)	41	285
Total recognized in net pension expense and other comprehensive income	216	245	396
Supplemental Employee Retirement Plans, Defined Benefit [Member]
Net pension expense:
Service cost	0	0	0
Interest cost	45	46	50
Expected return on plan assets	(70)	(76)	(73)
Recognized net actuarial loss	80	82	80
Settlement cost	0	0	0
Net pension expense	55	52	57
Net loss	29	122	252
Amortization of net loss	(80)	(82)	(80)
Total recognized in other comprehensive income	(51)	40	172
Total recognized in net pension expense and other comprehensive income	$ 4	$ 92	$ 229