Share-Based Payments (Tables)

12 Months Ended

Sep. 30, 2014

Share-Based Payments

Summary of activity for stock option awards

	Number of Outstanding Options (in Thousands)			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (in Years)		Aggregate Intrinsic Value (in Thousands)
Outstanding at September 30, 2013		10,408		$	12.89		6.2	$	138,139
Granted		1,596			26.22
Exercised		(2,727	)		9.78
Forfeited or expired		(294	)		21.15
Outstanding at September 30, 2014		8,983		$	15.93		6.2	$	102,751
Exercisable at September 30, 2014		5,235		$	12.10		5.1	$	79,950

Summary of stock options by range of exercise prices

	Options Outstanding						Options Exercisable
Range of Exercise Prices	Number Outstanding at September 30, 2014 (in Thousands)		Weighted Average Remaining Contractual Term (in Years)		Weighted Average Exercise Price		Number Exercisable at September 30, 2014 (in Thousands)		Weighted Average Exercise Price
$2.00 - 9.66		2,851		3.6	$	7.66		2,851	$	7.66
$11.39 - 26.30		6,132		7.3		19.78		2,384		17.41
Total		8,983		6.2	$	15.93		5,235	$	12.10

Schedule of weighted average assumptions for valuation of stock options

	Year Ended September 30,
	2014			2013			2012
Expected life (in years)		5.0			5.0			5.0
Expected volatility		47.3	%		56.3	%		58.4	%
Risk-free interest rate		1.3	%		0.8	%		1.1	%
Dividend yield		0.0	%		0.0	%		0.0	%

Restricted Stock Awards

Share-Based Payments

Summary of the activity for restricted stock awards/units

Restricted Stock Awards	Number of Shares (in Thousands)			Weighted Average Fair Value Per Share		Weighted Average Remaining Vesting Term (in Years)
Unvested at September 30, 2013		337		$	16.30		3.1
Granted		247			26.57
Vested		(115	)		13.81
Forfeited		(33	)		21.10
Unvested at September 30, 2014		436		$	22.42		3.4

Restricted Stock Units

Share-Based Payments

Summary of the activity for restricted stock awards/units

Restricted Stock Units	Number of Shares (in Thousands)			Weighted Average Fair Value Per Share		Weighted Average Remaining Vesting Term (In Years)
Unvested at September 30, 2013		—		$	—		—
Granted		27			26.30
Vested		(27	)		26.30
Forfeited		—			—
Unvested at September 30, 2014		—		$	—		—