Benefit Plans

6 Months Ended

Jun. 30, 2015

Compensation and Retirement Disclosure [Abstract]

Pension and Other Postretirement Benefits Disclosure

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 June 30,						Six Months Ended June 30,
(In thousands)	2015			2014			2015			2014
Service cost	$	207		$	182		$	415		$	364
Interest cost	3,517			3,584			7,035			7,168
Expected return on assets	(3,902		)	(4,009		)	(7,804		)	(8,017		)
Amortization of unrecognized prior service costs	570			698			1,140			1,331
Amortization of actuarial losses/(gains)	1,057			804			2,113			1,513
Net periodic pension cost	$	1,449		$	1,259		$	2,899		$	2,359

	Postretirement Benefits
	Three Months Ended June 30,						Six Months Ended June 30,
(In thousands)	2015			2014			2015			2014
Service cost	$	41		$	16		$	83		$	33
Interest cost	144			164			288			327
Amortization of unrecognized prior service costs	(160		)	(117		)	(319		)	(234		)
Amortization of actuarial losses/(gains)	81			59			163			118
Net periodic postretirement cost	$	106		$	122		$	215		$	244

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.