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Income Taxes - Components of the Net Deferred Tax (Liability) and Asset (Detail) - USD ($) | Sep. 30, 2015 | Sep. 30, 2014
--- | --- | ---
Deferred tax assets: |  |
Reserve for other receivables |  | $ 233,014
Accrued compensation | $ 1,513,021 | 1,313,354
Stock compensation | 6,571,774 | 3,011,369
Capitalized research and development |  | 13,536,745
Fair value adjustments | 2,850,125 | 1,864,364
Net operating losses | 88,965,968 | 42,268,526
Intangible Assets | 5,551,705 |
Total deferred tax assets | 105,452,593 | 62,227,372
Valuation allowance | (95,085,045) | (55,224,802)
Deferred tax liabilities: |  |
State taxes | (10,282,834) | (6,277,587)
Equity investments |  | (7,675)
Intangible assets |  | (475,829)
Fixed assets | (84,714) | (241,479)
Total deferred tax liability | $ (10,367,548) | $ (7,002,570)

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