Pension Benefits (Tables)

6 Months Ended

Jun. 30, 2020

Pension Benefits

Summary of pension costs

	Three Months Ended				Six Months Ended
(Amounts in thousands)	June 30, 2020		June 30, 2019		June 30, 2020		June 30, 2019
Service cost	$	325	$	337	$	650	$	675
Interest cost		1,622		2,002		3,245		4,004
Expected return on plan assets		(3,279)		(3,331)		(6,558)		(6,661)
Amortization of net actuarial loss		258		193		515		384
Total net periodic benefit	$	(1,074)	$	(799)	$	(2,148)	$	(1,598)

Schedule of weighted average assumptions used to determine net cost

Weighted-Average Assumptions Used To Determine Net Cost

	Three Months Ended				Six Months Ended
	June 30, 2020		June 30, 2019		June 30, 2020		June 30, 2019
Discount rate	3.00	%	4.05	%	3.00	%	4.05	%
Rate of compensation increase	N/A		N/A		N/A		N/A
Expected return on plan assets	6.50	%	7.25	%	6.50	%	7.25	%