EMPLOYEE BENEFIT PLANS (Tables)

6 Months Ended

Jun. 30, 2014

Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]

Schedule of Net Benefit Costs

The net pension and postretirement benefit costs that have been recorded are shown in the following tables:

	Pension						Postretirement
	Three Months Ended  June 30,						Three Months Ended  June 30,
	2014			2013			2014			2013
Components of Net Periodic Benefit Cost
Service cost	$	1,544		$	2,011		$	147		$	249
Interest cost	4,452			3,953			199			240
Expected return on plan assets	(6,330		)	(5,966		)	—			—
Amortization of prior service cost	277			322			4			6
Amortization of losses	2,603			4,791			116			218
Amortization of negative plan amendment	—			—			(133		)	—
Net periodic benefit cost	$	2,546		$	5,111		$	333		$	713

	Pension						Postretirement
	Six Months Ended June 30,						Six Months Ended June 30,
	2014			2013			2014			2013
Components of Net Periodic Benefit Cost
Service cost	$	3,168		$	4,430		$	326		$	498
Interest cost	9,135			8,787			405			480
Expected return on plan assets	(12,988		)	(13,390		)	—			—
Amortization of prior service cost	569			710			8			13
Amortization of losses	5,340			10,516			245			436
Amortization of negative plan amendment	—			—			(267		)	—
Net periodic benefit cost	$	5,224		$	11,053		$	717		$	1,427