Pension and Other Postretirement Plans (Tables)

9 Months Ended

Sep. 30, 2019

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)		2019		2018		2019		2018
Pension Benefits
Components of net periodic benefit cost:
Service cost	$	1,040	$	1,431	$	3,402	$	4,292
Interest cost		3,170		3,215		10,364		9,645
Expected return on assets		(5,054)		(6,560)		(16,523)		(19,680)
Amortization of:
Prior service credit		(26)		(11)		(85)		(33)
Actuarial loss		1,637		1,319		5,351		3,958
Net periodic benefit (credit) cost	$	767	$	(606)	$	2,509	$	(1,818)
Postretirement Benefits
Components of net periodic benefit cost:
Service cost	$	276	$	320	$	829	$	962
Interest cost		721		653		2,164		1,959
Expected return on assets		(677)		(808)		(2,034)		(2,424)
Amortization of:
Transition obligation		1		1		2		2
Prior service credit		(664)		(667)		(1,994)		(2,001)
Actuarial loss		100		122		300		366
Net periodic benefit (credit) cost	$	(243)	$	(379)	$	(733)	$	(1,136)