Pension and Other Postretirement Plans (Tables)

3 Months Ended

Mar. 31, 2018

Compensation and Retirement Disclosure [Abstract]

Schedule of Net Periodic Benefit Costs

The following table presents the components of net periodic benefit costs recognized for the three months endedMarch 31,2018 and 2017.

		Three Months Ended
		March 31,
(In thousands)		2018		2017
Pension Benefits
Components of net periodic benefit cost:
Service cost	$	1,457	$	1,332
Interest cost		3,208		3,119
Expected return on assets		(6,568)		(5,742)
Amortization of:
Prior service credit		(11)		(4)
Actuarial loss		1,298		1,464
Net periodic benefit (credit) cost	$	(616)	$	169
Postretirement Benefits
Components of net periodic benefit cost:
Service cost	$	332	$	206
Interest cost		658		444
Expected return on assets		(802)		(472)
Amortization of:
Transition obligation		1		-
Prior service credit		(667)		(436)
Actuarial loss		128		129
Net periodic benefit (credit) cost	$	(350)	$	(129)