Pension and Other Postretirement Benefits

6 Months Ended

Jun. 30, 2016

Compensation and Retirement Disclosure [Abstract]

Pension and Other Postretirement Benefits

Pension and Other Postretirement Benefits

Pension and other postretirement benefits expenses consisted of the following:

	Three months ended June 30,						Six months ended June 30,
Pensions	2016			2015			2016			2015
Service cost	$	1,318		$	1,299		$	2,702		$	2,752
Interest cost	4,945			5,297			9,781			9,992
Expected return on plan assets	(7,667		)	(8,589		)	(15,210		)	(16,159		)
Amortization of prior service cost	55			77			105			155
Amortization of actuarial losses	2,856			4,056			5,412			7,485
Net periodic benefit cost	$	1,507		$	2,140		$	2,790		$	4,225

	Three months ended June 30,						Six months ended June 30,
Other Postretirement Benefits	2016			2015			2016			2015
Service cost	$	27		$	36		$	61		$	73
Interest cost	431			425			884			918
Amortization of prior service credit	(94		)	(141		)	(187		)	(282		)
Amortization of actuarial losses	91			244			267			505
Net periodic benefit cost	$	455		$	564		$	1,025		$	1,214

As planned, the Company made a $15,000 discretionary contribution to the U.S. qualified pension plans in March 2016.