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Stock-based Compensation (Tables) | 12 Months Ended
--- | ---
Aug. 31, 2012
Stock-based Compensation |
Schedule of total employee stock-based compensation expense recognized in the consolidated statements of operations |
|  | Years Ended August 31, |
--- | --- | --- | ---
|  | 2012 |  | 2011 |  | 2010 |
Stock options and stock units to employees |  | $ | 1,921 |  | $ | 862 |  | $ | 131 |
Stock units to directors |  |  | 578 |  |  | 823 |  |  | — |
Stock options to nonemployees |  |  | 6 |  |  | (27 | ) |  | 54 |
Other stock-based compensation activity |  |  | 111 |  |  | 127 |  |  | 62 |
|  | $ | 2,616 |  | $ | 1,785 |  | $ | 247 |
Summary of weighted-average assumptions for grants of options used for estimating the fair value of each employee stock option |
|  | Years Ended August 31, |
--- | --- | --- | ---
|  | 2012 |  | 2011 |  | 2010 |
Dividend rate |  |  | — |  |  | 0 | % |  | 0 | %
Risk-free interest rate |  |  | — |  |  | 2.2 | % |  | 2.7 | %
Expected term (in years) |  |  | — |  |  | 6.3 |  |  | 6.2 |
Expected volatility |  |  | — |  |  | 48.1 | % |  | 69.3 | %
Summary of the option activity and changes under the 2005 Plan and 2010 Plan |
|  | Number of Stock Options Outstanding |  | Weighted- Average Exercise Price |  | Weighted- Average Remaining Contractual Life (Years) |  | Aggregate Intrinsic Value |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
|  | (In thousands) |  |  |  |  |  | (In thousands) |
Outstanding—September 1, 2009 |  |  | 950 |  | $ | 0.56 |  |  | 7.6 |  | $ | 41 |
Granted |  |  | 138 |  |  | 1.68 |  |  |  |  |  |  |
Forfeited |  |  | (25 | ) |  | 0.84 |  |  |  |  |  |  |
Exercised |  |  | (556 | ) |  | 0.42 |  |  |  |  |  |  |
Outstanding—August 31, 2010 |  |  | 507 |  |  | 1.12 |  |  | 8.1 |  |  | 4,766 |
Granted |  |  | 453 |  |  | 14.31 |  |  |  |  |  |  |
Forfeited |  |  | (85 | ) |  | 6.95 |  |  |  |  |  |  |
Exercised |  |  | (100 | ) |  | 0.78 |  |  |  |  |  |  |
Outstanding—August 31, 2011 |  |  | 775 |  |  | 8.20 |  |  | 8.5 |  |  | 1,456 |
Granted |  |  | — |  |  | — |  |  |  |  |  |  |
Forfeited |  |  | (118 | ) |  | 11.64 |  |  |  |  |  |  |
Exercised |  |  | (81 | ) |  | 0.86 |  |  |  |  |  |  |
Outstanding—August 31, 2012 |  |  | 576 |  | $ | 8.54 |  |  | 7.6 |  | $ | 263 |
Vested and expected to vest—August 31, 2012 |  |  | 521 |  | $ | 8.23 |  |  | 7.5 |  | $ | 257 |
Exercisable—August 31, 2012 |  |  | 235 |  | $ | 5.74 |  |  | 6.8 |  | $ | 173 |
Summary of additional information regarding the Company's stock options outstanding and vested |
Additional information regarding the Company's stock options outstanding and vested as of August 31, 2012 is summarized below:
|  | Options Outstanding |  | Options Exercisable |
--- | --- | --- | --- | --- | ---
Exercise Prices |  | Number |  | Weighted- Average Remaining Contractual Term (Years) |  | Weighted- Average Exercise Price per Share |  | Number |  | Weighted- Average Exercise Price per Share |
|  | (In thousands) |  |  |  |  |  | (In thousands) |  |  |
$0.21 - $0.42 |  |  | 15 |  |  | 3.3 |  | $ | 0.30 |  |  | 15 |  | $ | 0.30 |
$0.84 - $4.89 |  |  | 264 |  |  | 6.9 |  |  | 1.74 |  |  | 141 |  |  | 1.27 |
$6.08 - $15.61 |  |  | 97 |  |  | 8.7 |  |  | 6.82 |  |  | 28 |  |  | 7.12 |
$19.00 - $19.00 |  |  | 200 |  |  | 8.3 |  |  | 19.00 |  |  | 51 |  |  | 19.00 |
$0.21 - $19.00 |  |  | 576 |  |  | 7.6 |  | $ | 8.54 |  |  | 235 |  | $ | 5.74 |
Summary of the restricted stock unit awards outstanding and changes under the 2010 Plan |
|  | Number of Stock Units Outstanding |  | Weighted- Average Grant Date Fair Value |
--- | --- | --- | --- | --- | ---
|  | (In thousands) |  |  |
Outstanding—September 1, 2010 |  |  | — |  | $ | — |
Granted |  |  | 346 |  |  | 17.17 |
Vested |  |  | — |  |  | — |
Forfeited |  |  | (29 | ) |  | 19.00 |
Outstanding—August 31, 2011 |  |  | 317 |  |  | 17.00 |
Granted |  |  | 860 |  |  | 3.46 |
Vested |  |  | (127 | ) |  | 18.10 |
Forfeited |  |  | (120 | ) |  | 10.67 |
Outstanding—August 31, 2012 |  |  | 930 |  | $ | 5.15 |
Employees |
Stock-based Compensation |
Schedule of total employee stock-based compensation expense recognized in the consolidated statements of operations |
|  | Years Ended August 31, |
--- | --- | --- | ---
|  | 2012 |  | 2011 |  | 2010 |
Cost of revenues |  | $ | 952 |  | $ | 523 |  | $ | 52 |
Research and development |  |  | 366 |  |  | 184 |  |  | 33 |
Selling, general and administrative |  |  | 603 |  |  | 155 |  |  | 46 |
|  | $ | 1,921 |  | $ | 862 |  | $ | 131 |

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