Annual report pursuant to Section 13 and 15(d)

Note 14 - Stockholders' Equity (Details Textual)

v3.20.4
Note 14 - Stockholders' Equity (Details Textual)
$ / shares in Units, $ in Thousands
 3 Months Ended 11 Months Ended
Jun. 06, 2019
$ / shares
shares
May 14, 2019
USD ($)
$ / shares
shares
Apr. 29, 2019
shares
Apr. 26, 2019
shares
Apr. 01, 2019
Dec. 06, 2018
USD ($)
$ / shares
shares
Apr. 30, 2019
USD ($)
Oct. 31, 2019
USD ($)
$ / shares
shares
Oct. 31, 2020
$ / shares
shares
Stock Redeemed or Called During Period, Value | $               $ 16,010  
Common Stock, Shares Authorized (in shares)           500,000,000   500,000,000 500,000,000
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares           $ 0.0001   $ 0.0001 $ 0.0001
Preferred Stock, Shares Authorized (in shares)           10,000,000      
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares           $ 0.0001      
Common Stock, Shares, Issued, Total (in shares)           28,847,707   58,253,220 56,463,992
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)           34,100,000      
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)           1      
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares           $ 11.50     $ 11.50
Preferred Stock, Shares Outstanding, Ending Balance (in shares)           2,450,980      
Convertible Preferred Stock, Shares Issued upon Conversion (in shares) 1                
Convertible Preferred Stock, Additional Cumulative Amount, Accrue Annual Rate 7.00%                
Convertible Preferred Stock, Convertible, Stock Price Trigger (in dollars per share) | $ / shares $ 13.00                
Debt Instrument, Consecutive Period (Day) 30 days                
Adjustment to Equity Related to Issuance of Shares in Exchange for Warrants | $               $ 0  
Par Value of Warrant in APIC | $             $ 21,100    
Stock Issued During Period, Value, Issued in Exchange for Warrant | $             26,300    
Common Stock, Shares, Outstanding, Ending Balance (in shares)           28,847,707   58,253,220 56,463,992
Additional Paid-in Capital [Member]                  
Stock Redeemed or Called During Period, Value | $               $ 12,433  
Adjustment to Equity Related to Issuance of Shares in Exchange for Warrants | $             5,200 5,158  
Retained Earnings [Member]                  
Stock Redeemed or Called During Period, Value | $               3,577  
Adjustment to Equity Related to Issuance of Shares in Exchange for Warrants | $             $ (5,200) $ (5,158)  
Public Warrants [Member]                  
Number of Shares Issued in Exchange for Warrants (in shares)     2,101,213            
Class of Warrant or Right, Outstanding (in shares)                 13,017,777
Warrant Exchange for Common Stock, Exchange Ratio         0.2105        
Numer of Warrants Tendered for Exchange (in shares)       9,982,123          
Private Warrants [Member]                  
Number of Shares Issued in Exchange for Warrants (in shares)     1,707,175            
Class of Warrant or Right, Outstanding (in shares)                 0
Warrant Exchange for Common Stock, Exchange Ratio         0.1538        
Numer of Warrants Tendered for Exchange (in shares)       11,100,000          
Public Offering [Member]                  
Stock Issued During Period, Shares, New Issues (in shares)   18,098,166              
Shares Issued, Price Per Share (in dollars per share) | $ / shares   $ 4.50              
Proceeds from Issuance of Common Stock | $   $ 77,400              
Public Offering [Member] | Directors, Officers, Stockholders [Member]                  
Stock Issued During Period, Shares, New Issues (in shares)   3,980,166              
Shares Issued, Price Per Share (in dollars per share) | $ / shares   $ 4.50              
Percentage of Shares Issued   25.00%              
Common Class A [Member]                  
Stock Redeemed or Called During Period, Shares (in shares)           22,337,322      
Stock Redeemed or Called During Period, Value | $           $ 231,400      
Series A Preferred Stock [Member]                  
Preferred Stock, Dividend Rate, Percentage           0.00%