Employee Benefits (Tables)

6 Months Ended

Jun. 30, 2014

Retirement Plans

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Benefit Costs

The net periodic benefit cost recognized for the three, six and twelve months endedJune 30, 2014 and 2013 is made up of the components listed below as determined using the projected unit credit actuarial cost method (in thousands):

	Three Months Ended						Six Months Ended						Twelve Months Ended
	June 30,						June 30,						June 30,
	2014			2013			2014			2013			2014			2013
Components of net periodic benefit cost:
Service cost	$	2,189		$	2,430		$	4,362		$	4,830		$	8,859		$	9,245
Interest cost	3,790			3,400			7,660			6,800			14,474			13,579
Expected return on plan assets	(4,656		)	(4,275		)	(9,336		)	(8,550		)	(17,894		)	(15,772		)
Amortization of:
Net loss	2,515			2,745			4,288			5,420			9,966			11,098
Prior service (benefit) cost	(894		)	25			(1,153		)	50			(1,106		)	107
Net periodic benefit cost	$	2,944		$	4,325		$	5,821		$	8,550		$	14,299		$	18,257

Other Postretirement Benefit Plans, Defined Benefit

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Benefit Costs

The net periodic benefit cost recognized for the three, six and twelve months endedJune 30, 2014 and 2013 is made up of the components listed below (in thousands):

	Three Months Ended						Six Months Ended						Twelve Months Ended
	June 30,						June 30,						June 30,
	2014			2013			2014			2013			2014			2013
Components of net periodic benefit cost:
Service cost	$	722		$	1,100		$	1,422		$	2,200		$	3,065		$	4,389
Interest cost	1,107			1,375			2,232			2,750			4,638			5,576
Expected return on plan assets	(533		)	(475		)	(1,058		)	(950		)	(2,059		)	(1,776		)
Amortization of:
Prior service benefit	(1,176		)	(1,425		)	(2,376		)	(2,850		)	(5,183		)	(5,789		)
Net (gain) loss	(686		)	—			(1,336		)	—			(1,962		)	308
Net periodic benefit cost (benefit)	$	(566	)	$	575		$	(1,116	)	$	1,150		$	(1,501	)	$	2,708