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Consolidated Statements of Operations and Comprehensive Loss - USD ($) | 12 Months Ended
--- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2015
Income Statement [Abstract] |  |  |
REVENUE | $ 31,407,709 | $ 158,333 | $ 382,000
OPERATING EXPENSES |  |  |
Research and development | 31,690,298 | 41,454,452 | 47,267,361
Acquired in-process research and development |  |  | 10,142,786
Salaries and payroll-related costs | 17,292,883 | 19,461,656 | 16,554,008
General and administrative expenses | 6,838,402 | 9,940,737 | 7,931,184
Stock-based compensation | 7,891,595 | 11,595,816 | 10,232,897
Depreciation and amortization | 4,690,440 | 3,260,045 | 2,336,207
Impairment expense |  | 2,050,817 |
Contingent consideration - fair value adjustments |  | (5,862,464) | 1,891,533
TOTAL OPERATING EXPENSES | 68,403,618 | 81,901,059 | 96,355,976
OPERATING LOSS | (36,995,909) | (81,742,726) | (95,973,976)
OTHER INCOME (EXPENSE) |  |  |
Gain (loss) on sale of fixed asset, net |  |  | 19,195
Interest income (expense), net | 415,128 | 265,794 | 729,158
Change in value of derivatives | 890,362 | (301,022) | 2,869,267
Other income (expense) | 1,312,524 | 57,352 | 417,874
TOTAL OTHER INCOME (EXPENSE) | 2,618,014 | 22,124 | 4,035,494
LOSS BEFORE INCOME TAXES | (34,377,895) | (81,720,602) | (91,938,482)
Provision for income taxes | (2,400) | (2,400) | (2,400)
NET LOSS | $ (34,380,295) | $ (81,723,002) | $ (91,940,882)
NET LOSS PER SHARE - BASIC & DILUTED | $ (0.47) | $ (1.34) | $ (1.60)
Weighted average shares outstanding - basic and diluted | 73,898,598 | 61,050,880 | 57,358,442
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX: |  |  |
Foreign Currency Translation Adjustments | $ 25,783 | $ 143,874 | $ (136,425)
COMPREHENSIVE LOSS | $ (34,354,512) | $ (81,579,128) | $ (92,077,307)

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