Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2020

Retirement Benefits [Abstract]

Components of benefit expense

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

	Three Months Ended  September 30,				Nine Months Ended  September 30,
(in thousands)	2020		2019		2020		2019
Interest cost	$	5,014	$	5,865	$	14,849	$	17,465
Expected return on plan assets, net of expenses	(5,250)		(4,865)		(15,762)		(14,981)
Amortization of actuarial loss and prior service cost	1,255		823		3,504		1,967
Total for defined benefit pension plan	1,019		1,823		2,591		4,451
Multi-employer plans	15		4		76		103
SERPs	242		248		722		756
Defined contribution plan	3,060		2,743		10,541		7,433
Net periodic benefit cost	4,336		4,818		13,930		12,743
Allocated to discontinued operations	(171)		(103)		(497)		(293)
Net periodic benefit cost — continuing operations	$	4,165	$	4,715	$	13,433	$	12,450