Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2013

Compensation and Retirement Disclosure [Abstract]

Components of Net Periodic Benefit Cost

The following table sets forth the net periodic benefit cost for the Company’s defined benefit pension plans and other benefits for the three months endedMarch 31:

	Pension Benefits						Other Benefits
	2013			2012			2013			2012
Components of net periodic benefit cost
Service cost	$	3,331		$	2,862		$	—		$	—
Interest cost	6,957			7,958			157			204
Expected return on plan assets	(8,803		)	(10,205		)	—			—
Amortization of prior service cost (benefit)	18			65			(122		)	(129		)
Recognized net actuarial loss	5,421			4,211			106			121
Curtailment loss (1)	1,159			—			—			—
Net periodic pension benefit cost	$	8,083		$	4,891		$	141		$	196

(1) The curtailment loss during the first quarter of 2013 resulted from the departure of certain executive officers and was recorded within selling and administrative expense.