Pension and Other Postretirement Plans (Tables)

9 Months Ended

Sep. 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				Nine Months Ended
		September 30,				September 30,
(In thousands)		2020		2019		2020		2019
Pension Benefits
Components of net periodic benefit cost:
Service cost	$	1,324	$	1,040	$	3,972	$	3,402
Interest cost		3,052		3,170		9,157		10,364
Expected return on assets		(6,807)		(5,054)		(20,422)		(16,523)
Amortization of:
Prior service credit		(31)		(26)		(93)		(85)
Actuarial loss		1,339		1,637		4,018		5,351
Net periodic benefit (credit) cost	$	(1,123)	$	767	$	(3,368)	$	2,509
Postretirement Benefits
Components of net periodic benefit cost:
Service cost	$	316	$	276	$	948	$	829
Interest cost		570		721		1,709		2,164
Expected return on assets		(789)		(677)		(2,366)		(2,034)
Amortization of:
Transition obligation		1		1		2		2
Prior service credit		(667)		(664)		(2,001)		(1,994)
Actuarial loss		55		100		165		300
Net periodic benefit (credit) cost	$	(514)	$	(243)	$	(1,543)	$	(733)