Share-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2011

Share-Based Compensation

Share-Based Compensation Expense

	For the Three Months Ended						For the Six Months Ended
	June 30,						June 30,
	2011			2010			2011			2010
Numerator:
Pre-tax expense	$	6,707		$	3,545		$	10,414		$	6,811
Tax effect		(2,535	)		(1,340	)		(3,936	)		(2,575	)
After tax expense		4,172			2,205			6,478			4,236
Denominator:
Denominator for basic shares -
weighted average shares		45,051			48,042			45,218			48,136
Denominator for diluted shares -
Adjusted weighted average shares and the effect of dilutive securities		46,340			49,272			46,470			49,446
Net expense per share:
Net expense per share - basic	$	0.09		$	0.05		$	0.14		$	0.09
Net expense per share - diluted	$	0.09		$	0.04		$	0.14		$	0.09

Intrinsic Value of Options Outstanding and Exercisable

	Outstanding		Exercisable
As of June 30, 2011	$	19,784	$	19,784
As of June 30, 2010		14,455		14,438

Intrinsic Value of Options Exercised

	For the Three Months Ended		For the Six Months Ended
June 30, 2011	$	1,951	$	7,923
June 30, 2010		4,786		13,855

Intrinsic Value of Restricted Shares Outstanding

As of June 30, 2011	$	53,643
As of June 30, 2010		40,323

Intrinsic Value of Restricted Shares Vested

	For the Three Months Ended		For the Six Months Ended
June 30, 2011	$	119	$	7,035
June 30, 2010		416		3,855

Stock Options

Stock Options Only	Shares			Weighted Average Exercise Price		Weighted Average Exercise Contractual Life		Aggregate Intrinsic Value ($000)
Options outstanding - December 31, 2010		2,563,708		$	24.18
Granted		—			—
Exercised		(745,428	)		23.26
Canceled		—			—
Options outstanding - June 30, 2011		1,818,280		$	24.55		4.63	$	19,784
Number of options exercisable		1,818,280		$	24.55		4.63	$	19,784

Restricted Stock

Restricted Shares Only	Shares			Weighted Average Grant Date Fair Value		Weighted Average Contractual Life		Aggregate Intrinsic Value ($000)
Shares outstanding - December 31, 2010		1,562,626		$	20.13
Granted		206,502			33.11
Vested		(214,704	)		21.98
Canceled		(40,366	)		22.28
Outstanding - June 30, 2011		1,514,058		$	21.58		1.31	$	53,643