Employee Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2020

Retirement Benefits [Abstract]

Components of benefit expense

The components of the employee benefit plans expense consisted of the following:

	Three Months Ended  June 30,				Six Months Ended  June 30,
(in thousands)	2020		2019		2020		2019
Interest cost	$	4,918	$	5,800	$	9,835	$	11,600
Expected return on plan assets, net of expenses	(5,256)		(5,058)		(10,512)		(10,116)
Amortization of actuarial loss and prior service cost	1,124		572		2,249		1,144
Total for defined benefit pension plan	786		1,314		1,572		2,628
Multi-employer plans	52		58		61		99
SERPs	240		250		480		508
Defined contribution plan	3,702		1,695		7,481		4,690
Net periodic benefit cost	4,780		3,317		9,594		7,925
Allocated to discontinued operations	(121)		(84)		(326)		(190)
Net periodic benefit cost — continuing operations	$	4,659	$	3,233	$	9,268	$	7,735