Defined Benefit Pension Plans (Tables)

9 Months Ended

Sep. 30, 2016

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

Schedule of defined benefit plans disclosures

Net periodic benefit cost related to all of the Company's defined benefit pension plans recognized in the Company's unaudited Condensed Consolidated Statements of Operations for the three months and nine months ended September 30, 2016 and 2015 included the following components:

	Three months ended						Nine months ended
(in thousands)	September 30, 2016			September 30, 2015			September 30, 2016			September 30, 2015
Service cost	$	167		$	(208	)	$	825		$	1,224
Interest cost	6,726			8,187			23,298			24,459
Expected return on assets	(8,024		)	(10,604		)	(28,782		)	(31,428		)
Amortization of actuarial loss	2,911			3,396			9,729			9,660
Net periodic benefit cost	$	1,780		$	771		$	5,070		$	3,915