PENSIONS AND OTHER POST-RETIREMENT BENEFITS (Tables)

9 Months Ended

Sep. 30, 2015

Compensation and Retirement Disclosure [Abstract]

Summary of the costs of the Company's employee pension and post retirement plans

The following tables summarize the costs of the Company’s employee pension and other post-retirement benefit plans for the periods indicated (in thousands):

	Pension Benefits						Other Benefits
	Three Months Ended						Three Months Ended
	September 30,			September 30,			September 30,			September 30,
	2015			2014			2015			2014
Service cost	$	1,851		$	1,734		$	(2	)	$	6
Interest cost	3,055			3,335			60			91
Expected return on plan assets	(3,564		)	(3,936		)	—			—
Amortization of prior service cost	—			3			(420		)	(561		)
Recognized actuarial loss	1,158			502			(209		)	154
Net periodic benefit cost	$	2,500		$	1,638		$	(571	)	$	(310	)

For the three months endedSeptember 30, 2015, $1.5 million of pension expense was incurred in cost of sales and $1.0 million was incurred in selling, general, and administrative expenses. For the three months endedSeptember 30, 2014, $0.9 million of pension expense was incurred in cost of sales and $0.7 million was incurred in selling, general, and administrative expenses.

	Pension Benefits						Other Benefits
	Nine months ended						Nine months ended
	September 30,			September 30,			September 30,			September 30,
	2015			2014			2015			2014
Service cost	$	5,626		$	5,202		$	5		$	18
Interest cost	9,283			10,005			221			273
Expected return on plan assets	(10,874		)	(11,808		)	—			—
Amortization of prior service cost	—			9			(564		)	(1,683		)
Recognized actuarial loss	5,490			1,506			(25		)	462
Net periodic benefit cost	$	9,525		$	4,914		$	(363	)	$	(930	)