EMPLOYEE BENEFITS (Annual Periodic Expense and Actuarial Assumptions) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Pension Plans
Defined Benefit Plan Disclosure
Service cost	$ 0	$ 0	$ 0
Interest cost	1,329,000	1,554,000	1,836,000
Expected return on plan assets	(1,912,000)	(1,744,000)	(2,014,000)
Recognized actuarial loss	979,000	979,000	651,000
Total net periodic expense	396,000	789,000	473,000
Assumptions used to determine net periodic expense:
Discount rate (as a percent)	2.98%	3.58%	4.50%
Expected return on plan assets (as a percent)	7.00%	7.00%	7.00%
Assumptions used to determine benefit obligations:
Discount rate (as a percent)	3.79%	2.98%	3.58%
Amount of amortization included in net periodic expense in the next fiscal year from the accumulated actuarial loss included in accumulated other comprehensive income	700,000
Postretirement Benefits Plan
Defined Benefit Plan Disclosure
Service cost	1,094,000	1,131,000	825,000
Interest cost	603,000	547,000	529,000
Expected return on plan assets	0	0	0
Recognized actuarial loss	395,000	194,000	0
Total net periodic expense	2,092,000	1,872,000	1,354,000
Assumptions used to determine net periodic expense:
Discount rate (as a percent)	3.68%	4.14%	5.15%
Assumptions used to determine benefit obligations:
Discount rate (as a percent)	4.48%	3.68%	4.14%
Amount of amortization included in net periodic expense in the next fiscal year from the accumulated actuarial loss included in accumulated other comprehensive income	100,000
Health care cost trend rate for next year and thereafter (as a percent)	5.50%
Effect of 1% increase on service and interest cost components	439,000
Effect of 1% decrease on service and interest cost components	(328,000)
Effect of 1% increase on postretirement benefit obligation	2,983,000
Effect of 1% decrease on postretirement benefit obligation	$ (2,326,000)