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Nature of Operations and Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Sep. 30, 2015
Accounting Policies [Abstract] |
Potentially Dilutive Common Shares Excluded from Net Loss per Share Calculation | At September 30, 2015, 2014 and 2013, the following potentially dilutive common shares were excluded from the net income (loss) per share calculation, as they would have been antidilutive:
|  | 2015 |  |  | 2014 |  |  | 2013 |
Stock options |  |  | 2,202,844 |  |  |  | 2,334,326 |  |  |  | 2,824,964 |
Warrants |  |  | - |  |  |  | 6,667 |  |  |  | 6,667 |
Restricted stock units |  |  | 350,184 |  |  |  | 1,101,303 |  |  |  | 692,504 |
Total potentially dilutive common shares outstanding |  |  | 2,553,028 |  |  |  | 3,442,296 |  |  |  | 3,524,135 |
Computation of Basic and Diluted Net Income (Loss) Per Share | The computation of basic and diluted net income (loss) per share for the fiscal years ended September 30, 2015, 2014 and 2013 is as follows:
|  | 2015 |  |  | 2014 |  |  | 2013 |
Net income (loss) |  | $ | 2,526,139 |  |  | $ | (5,291,869 | ) |  | $ | (7,275,706 | )
Weighted-average common shares and share equivalents outstanding—basic |  |  | 30,790,258 |  |  |  | 30,466,063 |  |  |  | 27,492,670 |
Dilutive potential common stock equivalents |  |  | 689,983 |  |  |  | — |  |  |  | — |
Weighted-average common shares and share equivalents outstanding—diluted |  |  | 31,480,241 |  |  |  | 30,466,063 |  |  |  | 27,492,670 |
Net income (loss) per share: |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 0.08 |  |  | $ | (0.17 | ) |  | $ | (0.26 | )
Diluted |  | $ | 0.08 |  |  | $ | (0.17 | ) |  | $ | (0.26 | )
Summary of Property and Equipment | The following is a summary of property and equipment as of September 30, 2015 and 2014:
|  | 2015 |  |  | 2014 |
Property and equipment—at cost: |  |  |  |  |  |  |  |
Equipment |  | $ | 1,281,161 |  |  | $ | 1,177,364 |
Furniture and fixtures |  |  | 229,201 |  |  |  | 227,189 |
Leasehold improvements |  |  | 994,573 |  |  |  | 980,837 |
|  |  | 2,504,935 |  |  |  | 2,385,390 |
Less: accumulated depreciation and amortization |  |  | (1,529,600 | ) |  |  | (1,092,120 | )
Total property and equipment, net |  | $ | 975,335 |  |  | $ | 1,293,270 |
Components of Comprehensive Loss | The following table summarizes the components of comprehensive loss for the fiscal years ended September 30, 2015, 2014 and 2013:
|  | 2015 |  |  | 2014 |  |  | 2013 |
Net income (loss) |  | $ | 2,526,139 |  |  | $ | (5,291,869 | ) |  | $ | (7,275,706 | )
Other comprehensive loss: |  |  |  |  |  |  |  |  |  |  |  |
Foreign currency translation adjustment |  |  | (318 | ) |  |  | - |  |  |  | - |
Change in unrealized gains (losses) on marketable securities |  |  | 4,887 |  |  |  | (9,648 | ) |  |  | 2,454 |
Total comprehensive loss |  | $ | 2,530,708 |  |  | $ | (5,301,517 | ) |  | $ | (7,273,252 | )

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