Employee Pension Plans (Tables)

9 Months Ended

Sep. 30, 2018

Employee Pension Plans [Abstract]

Components of Net Periodic Benefit Cost

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2018		2017		2018		2017
Interest cost	$	883	$	975	$	2,649	$	2,925
Expected return on plan assets		(1,077)		(1,088)		(3,231)		(3,264)
Amortization of net loss		513		456		1,539		1,368
Other		213		213		639		639
Net periodic benefit cost	$	532	$	556	$	1,596	$	1,668