Quarterly report pursuant to Section 13 or 15(d)

Warrant Liabilities - Summary of Warrants Outstanding and Fair Values (Details) (Parenthetical)

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Warrant Liabilities - Summary of Warrants Outstanding and Fair Values (Details) (Parenthetical) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Jun. 12, 2019
Aug. 26, 2016
Jun. 30, 2019
Jun. 30, 2019
Jul. 01, 2018
Proceeds from warrant exercised       $ 72
Fair value of warrant liability       48  
Warrant [Member]          
Proceeds from warrant exercised $ 72 $ 72      
Fair value of warrant liability   $ 48   $ 72  
Number of warrants repurchased or cancelled     88,081 88,081  
Exercise price $ 1.50 $ 1.50 $ 0.85 $ 0.85  
Number of warrants repurchased or cancelled, value       $ (75)