Employee Benefits (Tables)

9 Months Ended

Sep. 30, 2014

Retirement Plans

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Benefit Costs

The net periodic benefit cost recognized for the three, nine and twelve months endedSeptember 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						Nine Months Ended						Twelve Months Ended
	September 30,						September 30,						September 30,
	2014			2013			2014			2013			2014			2013
Components of net periodic benefit cost:
Service cost	$	2,112		$	2,166		$	6,474		$	6,996		$	8,805		$	9,204
Interest cost	3,691			3,410			11,351			10,210			14,755			13,600
Expected return on plan assets	(4,681		)	(4,281		)	(14,017		)	(12,831		)	(18,294		)	(16,442		)
Amortization of:
Net loss	2,283			2,903			6,571			8,323			9,346			11,162
Prior service (benefit) cost	(877		)	23			(2,030		)	73			(2,006		)	101
Net periodic benefit cost	$	2,528		$	4,221		$	8,349		$	12,771		$	12,606		$	17,625

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, nine and twelve months endedSeptember 30, 2014 and 2013 is made up of the components listed below (in thousands):

	Three Months Ended						Nine Months Ended						Twelve Months Ended
	September 30,						September 30,						September 30,
	2014			2013			2014			2013			2014			2013
Components of net periodic benefit cost:
Service cost	$	712		$	972		$	2,134		$	3,172		$	2,805		$	4,266
Interest cost	1,115			1,292			3,347			4,042			4,461			5,455
Expected return on plan assets	(529		)	(485		)	(1,587		)	(1,435		)	(2,103		)	(1,864		)
Amortization of:
Prior service benefit	(1,188		)	(1,392		)	(3,564		)	(4,242		)	(4,979		)	(5,711		)
Net (gain) loss	(668		)	—			(2,004		)	—			(2,630		)	154
Net periodic benefit cost (benefit)	$	(558	)	$	387		$	(1,674	)	$	1,537		$	(2,446	)	$	2,300