Employee Benefit Plans

3 Months Ended

Mar. 31, 2013

Compensation And Retirement Disclosure [Abstract]

Employee Benefit Plans

Note F – Employee Benefit Plans

Net periodic benefit cost included the following components for the three months ended March 31:

	Pension Benefits						Other Post-retirement Benefits
	2013			2012			2013			2012
	(in thousands)
Service cost	$	4,976		$	3,833		$	—		$	—
Interest cost		22,407			25,144			38			67
Expected return on plan assets		(33,518	)		(32,094	)		—			—
Amortization of prior service credit		(1,894	)		(1,748	)		(239	)		(233	)
Amortization of actuarial loss		21,112			17,755			281			317
Net periodic benefit cost	$	13,083		$	12,890		$	80		$	151

Pension benefits also include amounts related to a supplemental retirement plan. During the three months ended March 31, 2013, the Company made a $57.2 million contribution to the pension plan.