Post-retirement Plan (Tables)

3 Months Ended

Mar. 31, 2019

Pension and Other Postretirement Benefits Cost (Reversal of Cost) [Abstract]

Schedule of Costs of Retirement Plans

net periodic pension expense consisted of the following components:

	Three Months Ended March 31,
	2019			2018
	(In thousands)
Service cost - benefit earned during the period	$	1,027		$	1,104
Interest cost on projected benefit obligations	598			562
Expected return on plan assets	(811		)	(865		)
Net periodic pension expense	$	814		$	801

Net Periodic Pension Expense

The net periodic benefit credit of our post-retirement healthcare and other benefits plans consisted of the following components

	Three Months Ended March 31,
	2019			2018
	(In thousands)
Service cost – benefit earned during the period	$	367		$	412
Interest cost on projected benefit obligations	258			234
Amortization of prior service credit	(870		)	(870		)
Amortization of gain	(20		)	—
Net periodic post-retirement credit	$	(265	)	$	(224	)