XML 47 R37.htm IDEA: XBRL DOCUMENT v3.22.2
Note 4 - Fair Value Measurement and Fair Value of Financial Instruments (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Sep. 30, 2021
Fair Value Adjustment of Warrants $ (818) $ 4,161 $ (3,693) $ 6,020  
Measurement Input, Price Volatility [Member] | Valuation, Market Approach [Member]          
Warrants and Rights Outstanding, Measurement Input, Percentage 40.00%   40.00%    
Measurement Input, Price Volatility [Member] | Valuation Technique, Company Specific Volatility [Member]          
Warrants and Rights Outstanding, Measurement Input 0.60   0.60    
Minimum [Member] | Measurement Input, Price Volatility [Member] | Valuation, Market Approach [Member]          
Warrants and Rights Outstanding, Measurement Input, Percentage 26.70%   26.70%   28.80%
Maximum [Member] | Measurement Input, Price Volatility [Member] | Valuation, Market Approach [Member]          
Warrants and Rights Outstanding, Measurement Input, Percentage 65.50%   65.50%   66.20%
Weighted Average [Member] | Measurement Input, Price Volatility [Member] | Valuation, Market Approach [Member]          
Warrants and Rights Outstanding, Measurement Input, Percentage 56.70%   56.70%   55.80%