Stock-Based Compensation And Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2011

Stock-Based Compensation And Earnings Per Share [Line Items]

Total Stock-Based Compensation

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2011		2010		2011		2010
Stock-based compensation expense	$	225	$	1,911	$	8,609	$	4,730

Reconciliation Of Average Shares Outstanding

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2011		2010		2011		2010
Basic average shares outstanding		92,190,064		91,773,482		92,243,345		91,635,193
Net effect of stock options assumed to be exercised		—		—		—		—
Diluted average shares outstanding		92,190,064		91,773,482		92,243,345		91,635,193

Service-Based Restricted Stock Units [Member]

Stock-Based Compensation And Earnings Per Share [Line Items]

Summary Of Non-Vested Restricted Stock Activity

				Weighted Average
	Number of			Grant Date Fair
Service-Based Restricted Stock Units	Units			Value
Balance at December 31, 2010		266,659		$	30.91
Granted		107,696			28.01
Vested		(289,269	)		30.30
Forfeited		(20,900	)		28.55
Balance at September 30, 2011		64,186		$	29.59

Market Condition Restricted Stock Units [Member]

Stock-Based Compensation And Earnings Per Share [Line Items]

Summary Of Non-Vested Restricted Stock Activity

				Weighted Average
	Number of			Grant Date Fair
Market Condition Restricted Stock Units	Units			Value
Balance at December 31, 2010		562,531		$	23.17
Granted		154,424			21.10
Vested		(291,304	)		19.12
Forfeited		(397,586	)		23.35
Balance at September 30, 2011		28,065		$	15.69