Pensions and Other Postretirement Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2020

Retirement Benefits [Abstract]

Schedule of Net Periodic Benefit Plan Cost

The composition of the net periodic benefit cost for the three months ended March 31, 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	$580	$632	$50	$47
Interest cost	1,550	1,794	428	528
Expected return on assets	(1,723)	(2,057)	-	-
Amortization of prior service cost/(credit)	8	17	(1,122)	(1,122)
Amortization of net actuarial loss	596	564	648	557
Net periodic benefit cost	$1,011	$950	$4	$10