Post-retirement Plan (Tables)

3 Months Ended

Mar. 31, 2017

Pension and Other Postretirement Benefit Expense [Abstract]

Net Periodic Pension Expense

The net periodic benefit credit of this plan consisted of the following components:

	Three Months Ended March 31,
	2017			2016
	(In thousands)
Service cost – benefit earned during the period	$	300		$	324
Interest cost on projected benefit obligations	170			197
Amortization of prior service credit	(870		)	(871		)
Net periodic post-retirement credit	$	(400	)	$	(350	)