EMPLOYEE BENEFIT PLANS (Pre-tax Amounts in AOCI to be Recognized Over Next Fiscal Year) (Details) $ in Thousands	12 Months Ended
Dec. 31, 2015 USD ($)
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service costs (credits)	$ (53)
Amortization of net actuarial loss (gain)	(775)
Total	(828)
Post Retirement Medical Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service costs (credits)	(436)
Amortization of net actuarial loss (gain)	0
Total	$ (436)

Amount included in accumulated other comprehensive income (AOCI) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position, including gain (loss), prior service cost (credit), and transition asset (obligation).

No definition available.

Name:	us-gaap_DefinedBenefitPlanAmountToBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossNextFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration