Retirement Plans (Tables)

6 Months Ended

Jun. 30, 2016

Compensation and Retirement Disclosure [Abstract]

Net Periodic Benefit Credit for Defined Benefit Plans

The net periodic benefit credit for the defined benefit plans includes the following components:

	Three Months Ended						Six Months Ended
	June 30,						June 30,
(in thousands)	2016			2015			2016			2015
Service cost	$	(4	)	$	17		$	(8	)	$	34
Interest cost		1,544			1,477			3,088			2,954
Expected return on plan assets		(2,353	)		(2,491	)		(4,706	)		(4,982	)
Amortization:
Unrecognized prior service cost		2			2			4			4
Unrecognized loss		608			536			1,216			1,072
Net periodic pension credit	$	(203	)	$	(459	)	$	(406	)	$	(918	)