Pensions and Other Postretirement Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2020

Retirement Benefits [Abstract]

Schedule of Net Benefit Costs

The composition of the net periodic benefit cost for the nine months ended September 30, 2020 and 2019, was as follows:

	Pension plans				Other postretirement benefits
(in thousands)	2020		2019		2020		2019
Components of net periodic benefit cost:
Service cost	$	1,728	$	1,892	$	150	$	142
Interest cost	4,621		5,368		1,285		1,585
Expected return on assets	(5,139)		(6,155)		—		—
Settlement cost	145		—		—		—
Curtailment cost	233		—		—		—
Amortization of prior service cost/(credit)	24		51		(3,366)		(3,366)
Amortization of net actuarial loss	1,776		1,687		1,944		1,670
Net periodic benefit cost	$	3,388	$	2,843	$	13	$	31