Stock-Based Compensation And Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2011

Total Stock-Based Compensation

	Three Months Ended					Six Months Ended
	June 30,					June 30,
	2011			2010		2011		2010
Stock-based compensation expense	$	(87	)	$	2,314	$	8,383	$	3,845

Reconciliation Of Average Shares Outstanding

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2011		2010		2011		2010
Basic average shares outstanding		92,207,304		91,727,508		92,401,380		91,594,812
Net effect of stock options assumed to be exercised		—		—		7,004		—
Diluted average shares outstanding		92,207,304		91,727,508		92,408,384		91,594,812

Service-Based Non-Vested Restricted Stock [Member]

Summary Of Non-Vested Restricted Stock Activity

				Weighted Average
	Number of			Grant Date Fair
Service-Based Non-Vested Restricted Stock	Shares			Value
Balance at December 31, 2010		266,659		$	30.91
Granted		106,790			28.09
Vested		(288,363	)		30.33
Forfeited		(20,900	)		28.55
Balance at June 30, 2011		64,186		$	29.59

Market Condition Non-Vested Restricted Stock [Member]

Summary Of Non-Vested Restricted Stock Activity

				Weighted Average
	Number of			Grant Date Fair
Market Condition Non-Vested Restricted Stock	Shares			Value
Balance at December 31, 2010		562,531		$	23.17
Granted		154,424			21.10
Vested		(291,304	)		19.12
Forfeited		(395,946	)		23.38
Balance at June 30, 2011		29,705		$	15.69