Post-retirement Plan (Tables)

9 Months Ended

Sep. 30, 2020

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

Schedule of Costs of Retirement Plans

Our net periodic pension expense consisted of the following components:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
	(In thousands)
Service cost - benefit earned during the period	$	1,117	$	1,209	$	3,321	$	3,605
Interest cost on projected benefit obligations	428		450		1,287		1,325
Expected return on plan assets	(1,016)		(822)		(3,029)		(2,441)
Amortization of loss	—		15		—		45
Net periodic pension expense	$	529	$	852	$	1,579	$	2,534

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 September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
	(In thousands)
Service cost – benefit earned during the period	$	451	$	387	$	1,352	$	1,161
Interest cost on projected benefit obligations	237		267		710		801
Amortization of prior service credit	(870)		(870)		(2,611)		(2,611)
Amortization of (gain) loss	13		(22)		38		(66)
Net periodic post-retirement credit	$	(169)	$	(238)	$	(511)	$	(715)