Stock Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2011

Stock Compensation Plans (Tables) [Abstract]

Weighted-average fair values and assumptions for options granted

	2011		2010			2009
Risk free interest rate		—		1.96	%		1.89	%
Dividend yield		—		1.10	%		3.18	%
Volatility factor of the expected market price of the Company's common shares		—		.560			.520
Expected life for the options (in years)		—		4.10			4.10

Summary of stock options outstanding and exercisable under long-term performance compensation plan

		$000,00			$000,00		$000,00		$000,00
	Shares (000)'s			Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term		Aggregate Intrinsic Value ($000)
Options & SOSARs outstanding at January 1, 2011		851		$	33.38
SOSARs granted		—			—
Options exercised		(329	)		35.66
Options & SOSARs cancelled / forfeited		(19	)		41.65
Options and SOSARs outstanding at December 31, 2011		503		$	31.56		1.81	$	6,380
Vested and expected to vest at December 31, 2011		501		$	31.58		1.80	$	6,352
Options exercisable at December 31, 2011		363		$	34.57		1.41	$	3,597

	2011		2010		2009
Total intrinsic value of options exercised during the year ended December 31 (000's)	$	3,817	$	2,724	$	2,127
Total fair value of shares vested during the year ended December 31 (000's)	$	816	$	3,084	$	4,145
Weighted average fair value of options granted during the year ended December 31			$	13.75	$	3.80

Summary of nonvested restricted shares

	Shares (000)'s			Weighted-Average Grant-Date  Fair Value
Nonvested at January 1, 2011		64			$	26.52
Granted		47				47.80
Vested		(17	)			45.49
Forfeited		(1	)			40.81
Nonvested at December 31, 2011		93			$	33.54

	2011		2010		2009
Total fair value of shares vested during the year ended December 31 (000's)	$	1,367	$	566	$	109
Weighted average fair value of restricted shares granted during the year ended December 31	$	47.80	$	32.75	$	11.02

Summary of nonvested performance share units

 

	Shares (000)'s			Weighted-Average Grant- Date Fair Value
Nonvested at January 1, 2011		124			$	26.90
Granted		77				47.80
Vested		—				—
Forfeited		(36	)			44.97
Nonvested at December 31, 2011		165			$	32.73

	2011		2010		2009
Weighted average fair value of PSUs granted during the year ended December 31	$	47.80	$	32.69	$	10.81

Fair value of the option component of the ESP Plan

	2011			2010			2009
Employee Share Purchase Plan
Risk free interest rate		0.27	%		0.47	%		0.37	%
Dividend yield		1.21	%		1.10	%		2.06	%
Volatility factor of the expected market price of the Company's common shares		.340			.544			.673
Expected life for the options (in years)		1.00			1.00			1.00