Quarterly report pursuant to Section 13 or 15(d)

Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals)

v3.19.2
Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($)
$ in Thousands
Apr. 30, 2019
Oct. 31, 2018
Preferred stock, par value (in dollars per share) $ 0.0001  
Preferred stock, issued (in shares) 2,450,980  
Preferred stock, outstanding (in shares) 2,450,980  
Preferred stock, liquidation  
Common stock, par value (in dollars per share) $ 0.0001 $ 0.001
Common stock, authorized (in shares) 500,000,000 15,000,000
Common stock, issued (in shares) 34,399,559 7,576,289
Common stock, outstanding (in shares) 34,399,559 7,576,289
Redeemable Preferred Stock [Member]    
Preferred stock, par value (in dollars per share)   $ 0.001
Preferred stock, issued (in shares)   2,342,264
Preferred stock, outstanding (in shares)   2,342,264
Preferred stock, liquidation   $ 11,239,060