Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2015

Benefit Plans [Abstract]

Components of net periodic benefit cost

The following table provides the components of net periodic benefit cost for the pension, supplemental executive retirement and other postretirement benefit plans:

	Three Months Ended June 30,
	Pension and Supplemental Executive Retirement Plans								Other Postretirement Benefits
	2015				2014				2015				2014
	(In thousands)
Service cost		$	2,680			$	2,203			$	214			$	152
Interest cost			4,016				3,985				171				144
Expected return on plan assets			(5,259	)			(5,257	)			(1,247	)			(1,163	)
Recognized net actuarial loss (gain)			1,533				250				(53	)			(144	)
Amortization of prior service cost			(211	)			(423	)			(1,663	)			(1,662	)
Net periodic benefit cost (benefit)		$	2,759			$	758			$	(2,578	)		$	(2,673	)

	Six Months Ended June 30,
	Pension and Supplemental Executive Retirement Plans						Other Postretirement Benefits
	2015			2014			2015			2014
	(In thousands)
Service cost	$	5,128		$	4,283		$	416		$	329
Interest cost		7,924			7,994			349			327
Expected return on plan assets		(10,554	)		(10,515	)		(2,495	)		(2,324	)
Recognized net actuarial loss (gain)		2,742			541			(88	)		(217	)
Amortization of prior service cost		(422	)		(465	)		(3,325	)		(3,325	)
Net periodic benefit cost (benefit)	$	4,818		$	1,838		$	(5,143	)	$	(5,210	)