EMPLOYEE BENEFIT PLANS (Tables)

3 Months Ended

Mar. 31, 2014

Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]

Schedule of net periodic benefit cost

The components of net periodic benefit cost related to the Company’s defined benefit plans consisted of the following:

	Three Months Ended March 31,
Pension Benefits	2014			2013
Components of net periodic benefit cost:
Service cost	$	4,291		$	3,699
Interest cost	570			248
Expected return on plan assets	(524		)	(138		)
Amortization of prior service costs	3			3
Amortization of loss	222			105
Net periodic benefit cost	$	4,562		$	3,917

	Three Months Ended March 31,
Post Retirement Medical Plan	2014			2013
Components of net periodic benefit cost:
Service cost	$	178		$	181
Interest cost	93			84
Amortization of prior service costs	(20		)	—
Amortization of gain	(5		)	—
Net periodic benefit cost	$	246		$	265