Stock-Based Compensation And Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2012

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

Total Stock-Based Compensation

	Three Months Ended March  31,
	2012		2011
Stock-based compensation expense	$	491	$	8,472

Reconciliation Of Average Shares Outstanding

	Three Months Ended March 31,
	2012		2011
Basic average shares outstanding		92,265,059		92,335,090
Net effect of stock options assumed to be exercised		—		13,071
Net effect of non-vested restricted stock assumed to be vested		—		30,577
Diluted average shares outstanding		92,265,059		92,378,738

Service-Based Restricted Stock Units [Member]

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

Summary Of Non-Vested Restricted Stock Activity

Service-Based Restricted Stock Units	Number of Units			Weighted Average Grant Date Fair Value
Balance at December 31, 2011		37,815		$	26.99
Granted		—			—
Vested		—			—
Exercised		(24,076	)		21.65
Forfeited		(1,656	)		21.52
Balance at March 31, 2012		12,083		$	21.52

Market Condition Restricted Stock Units [Member]

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

Summary Of Non-Vested Restricted Stock Activity

Market Condition Restricted Stock Units	Number of Units			Weighted Average Grant Date Fair Value
Balance at December 31, 2011		23,192		$	15.69
Granted		—			—
Vested		—			—
Forfeited		(23,192	)		15.69
Balance at March 31, 2012		—		$	—