Employee Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2014

Compensation And Retirement Disclosure [Abstract]

Components of Net Periodic Benefit (Income) Cost for the Pension Plans

Net periodic benefit (income) cost for the pension plans included the following components for the three months ended June 30:

	Pension Benefits
	2014			2013
	(in thousands)
Service cost	$	1,927		$	4,961
Interest cost		25,530			22,391
Expected return on plan assets		(36,234	)		(33,495	)
Amortization of prior service credit		(468	)		(1,892	)
Amortization of actuarial loss		6,613			21,097
Net periodic benefit (income) cost	$	(2,632	)	$	13,062

Net periodic benefit (income) cost for the pension plans included the following components for the six months ended June 30:

	Pension Benefits
	2014			2013
	(in thousands)
Service cost	$	3,836		$	9,937
Interest cost		51,032			44,798
Expected return on plan assets		(72,431	)		(67,013	)
Amortization of prior service credit		(932	)		(3,786	)
Amortization of actuarial loss		13,208			42,209
Net periodic benefit (income) cost	$	(5,287	)	$	26,145