Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2012

Estimates Weighted-average Fair Value Per Share of Options Granted

The following weighted-average assumptions were used for each respective period to calculate our stock-based compensation for each stock option grant:

	Fiscal Year Ended June 30,						Six Months Ended December 31,				Nine Months Ended September 30,
	2009		2010		2011		2010		2011		2011		2012
							(Unaudited)				(Unaudited)
Stock Options:
Expected volatility		69% - 75%		65%		50% - 69%		57% - 67%		56% - 69%		50% - 69%		54% - 57%
Expected term (in years)		5.62		6.02		6.05		6.04		5.75		5.83		6.05
Risk-free interest rate		1.48% - 3.77%		2.57% - 3.04%		1.43% - 2.96%		1.43% - 2.96%		0% - 1.92%		0.00% - 3.03%		0.87% - 1.18%
Dividend yield		—%		—%		—%		—%		—%		—%		—%

The following weighted-average assumptions were used to calculate our stock-based compensation for each stock purchase right granted under the Employee Stock Purchase Plan (ESPP), which became effective on June 28, 2012:

	Nine Months Ended, September 30, 2012
	(Unaudited)
ESPP:
Expected volatility		42	%
Expected term (in years)		.58
Risk-free interest rate		0.16	%
Dividend yield		—	%