Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2013

Employee Benefit Plans

Schedule of net periodic benefit cost

Components of Net Periodic	Three months ended September 30,						Nine months ended September 30,
Benefit Cost	2013			2012			2013			2012
	(in thousands)
Service cost	$	4,473		$	3,363		$	11,676		$	10,013
Interest cost	6,340			6,876			18,939			20,588
Expected return on plan assets	(4,065		)	(4,022		)	(12,196		)	(12,048		)
Recognized net actuarial loss	2,280			1,863			6,381			5,338
Net periodic benefit cost	$	9,028		$	8,080		$	24,800		$	23,891