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Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands | Sep. 30, 2018 | Sep. 30, 2017
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Statement Of Financial Position [Abstract] |  |
Receivable from related party | $ 0 | $ 1,329
Accounts payable to related party | 1,330 | 2,644
Deferred credits to related party | $ 7,702 | $ 7,370
Preferred stock, par value | $ 0 | $ 0
Preferred stock, shares authorized | 5,000,000 | 5,000,000
Preferred stock, shares issued | 0 | 0
Preferred stock, shares outstanding | 0 | 0
Common stock, no par value | $ 0 | $ 0
Common stock, shares authorized | 125,000,000 | 125,000,000
Common stock, shares issued | 23,902,903 | 11,294,083
Common stock, shares outstanding | 23,902,903 | 11,294,083
Common stock, warrants issued | 10,614,990 | 12,230,625
Common stock, warrants outstanding | 10,614,990 | 12,230,625

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