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Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2020	Sep. 30, 2019
Statement Of Financial Position [Abstract]
Accounts payable to related party		$ 1,729
Deferred credits to related party		$ 5,751
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	35,526,918	31,413,287
Common stock, shares outstanding	35,526,918	31,413,287
Common stock, warrants issued	0	3,600,953
Common stock, warrants outstanding	0	3,600,953

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