EMPLOYEE BENEFITS (AOCI) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Unrecognized prior service cost	$ 0	$ 0
Unrecognized actuarial loss	56,943	32,162
Total amounts recognized in AOCI	56,943	32,162
Anticipated amortization of net actuarial losses in next fiscal year	4,546
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Unrecognized prior service cost	0	0
Unrecognized actuarial loss	32,979	13,147
Total amounts recognized in AOCI	32,979	13,147
Anticipated amortization of net actuarial losses in next fiscal year	$ 2,920