Postretirement Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2013

Compensation And Retirement Disclosure [Abstract]

Schedule of Post-Retirement Benefit Costs

The following tables present a summary of post-retirement benefit costs by component.

Components of Post-Retirement Benefit Costs

	Three Months ended September 30,
	Pension Benefits						Other Benefits
	2013			2012			2013		2012
Service cost	$	3,746		$	2,928		$	69	$	81
Interest cost		4,260			4,100			258		254
Expected return on assets		(4,357	)		(4,242	)		0		0
Prior service cost		569			516			0		0
Net actuarial (gain)/loss		4,060			3,434			74		0
Net periodic benefit cost	$	8,278		$	6,736		$	401	$	335

	Nine Months ended September 30,
	Pension Benefits						Other Benefits
	2013			2012			2013		2012
Service cost	$	11,238		$	8,309		$	271	$	325
Interest cost		12,783			12,397			775		767
Expected return on assets		(13,072	)		(12,479	)		0		0
Prior service cost		1,707			1,547			0		0
Net actuarial (gain)/loss		12,184			9,392			149		0
Net periodic benefit cost	$	24,840		$	19,166		$	1,195	$	1,092

Schedule of Defined-Benefit Plans Disclosures

The following chart presents assets at fair value for the defined-benefit pension plans at September 30, 2013 and the prior-year end.

Pension Assets by Component

		September 30, 2013			December 31, 2012
		Amount	%		Amount	%
Corporate debt	$	159,000	55.9	$	169,817	61.2
Other fixed maturities		275	0.1		327	0.1
Equity securities		104,076	36.6		89,833	32.4
Short-term investments		5,448	1.9		2,218	0.8
Guaranteed annuity contract		13,169	4.6		13,277	4.8
Other		2,567	0.9		2,169	0.7
Total	$	284,535	100.0	$	277,641	100.0