v2.4.0.8

Stockholders' Equity (Tables)

12 Months Ended

Sep. 30, 2013

Stockholders' Equity

Summary of stock option activity

		Options			Weighted- Average Exercise Price
Options outstanding at September 30, 2011			2,894,547		$	11.55
Options granted			181,783			34.42
Options exercised			(1,322,387	)		11.72
Options canceled			(78,148	)		12.72
Options outstanding at September 30, 2012			1,675,795			13.84
Options granted			171,994			35.76
Options exercised			(223,139	)		11.35
Options canceled			(32,244	)		18.67
Options outstanding at September 30, 2013			1,592,406			16.46
Options exercisable at September 30, 2013			1,161,779			13.48

Summary of information about options outstanding and exercisable

The following table summarizes information about options outstanding at September 30, 2013:

		Options Outstanding
Range of Exercise Price		Number Outstanding			Weighted- Average Remaining Contractual Life			Weighted- Average Exercise Price
$2.00 - 8.00			192,001			4.72		$	7.33
$8.23 - $46.72			1,400,405			6.01			17.71
			1,592,406			5.85			16.46

        The following table summarizes information about options exercisable at September 30, 2013:

		Options Exercisable
Range of Exercise Price		Number Exercisable			Weighted- Average Remaining Contractual Life			Weighted- Average Exercise Price
$3.00 - $42.31			1,161,779			5.18		$	13.48

Summary of information about assumptions used in valuing options granted

		Year ended September 30
		2013			2012			2011
Dividend yield			—			—			—
Expected volatility			51.8% - 60.6%			60.4	%		63.9% - 64.8%
Risk-free interest rate			0.1% - 1.0%			0.6	%		0.3% - 1.7%
Expected forfeiture rate			19.7%			19.0	%		18.4%

Summary of restricted share activity

		Restricted Shares			Weighted- Average Fair Value
Unvested restricted shares at September 30, 2011			1,294,082		$	13.13
Restricted shares granted			633,647			34.05
Restricted shares vested			(390,068	)		12.53
Restricted shares canceled			(138,052	)		15.70
Unvested restricted shares at September 30, 2012			1,399,609			22.51
Restricted shares granted			997,857			36.97
Restricted shares vested			(450,514	)		21.18
Restricted shares canceled			(403,083	)		35.39
Unvested restricted shares at September 30, 2013			1,543,869			28.89

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Tabular disclosure of the changes in outstanding nonvested shares.

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