Pension and Other Postretirement Plans (Tables)

6 Months Ended

Jun. 30, 2020

Compensation and Retirement Disclosure [Abstract]

Schedule of Net Periodic Benefit Costs

The following table presents the components of net periodic benefit costs recognized.

		Three Months Ended				Six Months Ended
		June 30,				June 30,
(In thousands)		2020		2019		2020		2019
Pension Benefits
Components of net periodic benefit cost:
Service cost	$	1,332	$	1,221	$	2,648	$	2,362
Interest cost		3,082		3,742		6,105		7,194
Expected return on assets		(6,804)		(5,922)		(13,615)		(11,469)
Amortization of:
Prior service credit		(31)		(31)		(62)		(59)
Actuarial loss		1,392		1,985		2,678		3,714
Net periodic benefit (credit) cost	$	(1,029)	$	995	$	(2,246)	$	1,742
Postretirement Benefits
Components of net periodic benefit cost:
Service cost	$	321	$	334	$	632	$	553
Interest cost		566		865		1,139		1,442
Expected return on assets		(787)		(676)		(1,577)		(1,357)
Amortization of:
Transition obligation		1		1		1		2
Prior service credit		(667)		(662)		(1,334)		(1,330)
Actuarial loss		40		94		110		200
Net periodic benefit (credit) cost	$	(526)	$	(44)	$	(1,029)	$	(490)