Stock-Based Compensation Plans (Tables)

3 Months Ended

Mar. 31, 2013

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Share-based Compensation, Activity

The following table summarizes the activity for all stock options, restricted stock units and performance shares under all of the Long-Term Incentive Plans for the three months ended March 31, 2013:

		December 31, 2012			Activity during 2013											March 31, 2013
		Outstanding			Granted			Exercised				Canceled				Outstanding			Exercisable
Plans	Securities	Number	Price		Number	Price		Number		Price		Number		Price		Number	Price		Number	Price
2004 LTIP	Options	17,376	$	34.94	—	$	—	(750	)	$	36.03	—		$	—	16,626	$	34.89	16,626	$	34.89
2005 LTIP	RSUs	3,053	0.01		—	—		—		—		—		—		3,053	0.01		3,053	0.01
2007 LTIP	RSUs	24,920	0.01		—	—		(24,514	)	0.01		—		—		406	0.01		406	0.01
	Options	169,107	25.62		—	—		(33,373	)	24.40		—		—		135,734	25.92		135,734	25.92
	Perf. shares	8,453	0.01		—	—		(8,453	)	0.01		—		—		—	—		—	—
2010 LTIP	RSUs	120,126	0.01		87,268	0.01		(47,033	)	0.01		(667	)	0.01		159,694	0.01		—	—
	Options	7,500	32.78		—	—		—		—		—		—		7,500	32.78		3,125	32.78
	Perf. shares	77,047	0.01		90,500	0.01		(33,010	)	0.01		(13,202	)	0.01		121,335	0.01		—	—
Total		427,582			177,768			(147,133	)			(13,869	)			444,348			158,944

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 Note: Price is weighted-average price per share.