Benefit Plans

The Corporation sponsors several qualified and nonqualified pension and other postretirement plans for certain of its employees. The net periodic pension cost is based on estimated values provided by an outside actuary. The components of net periodic benefit cost are as follows:



	Pension Benefits
	Three Months Ended March 31,
(In thousands)	2015			2014
Service cost	$	207		$	182
Interest cost	3,517			3,584
Expected return on assets	(3,902		)	(4,009		)
Amortization of unrecognized prior service costs	570			634
Amortization of Actuarial Gain	1,057			708
Net periodic pension cost	$	1,449		$	1,099



	Postretirement Benefits
	Three Months Ended March 31,
(In thousands)	2015			2014
Service cost	$	41		$	16
Interest cost	144			164
Amortization of unrecognized prior service costs	(160		)	(117		)
Amortization of actuarial losses/(gains)	81			59
Net periodic postretirement cost	$	106		$	122

For further information on the Corporation's employee benefit plans, refer to Note 14 (Benefit Plans) to the consolidated financial statements in the 2014 Form 10-K.