Annual report pursuant to Section 13 and 15(d)

Note 2 - Shareholders' Equity - Valuation Assumptions (Details)

v3.20.2
Note 2 - Shareholders' Equity - Valuation Assumptions (Details)
12 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Dividend yield 0.00% 0.00%
Weighted average expected volatility   37.77%
Weighted average risk-free interest rate   2.92%
Weighted average expected life (in years) (Year)   3 years
Vesting period (in years) (Year) 4 years 259 days 3 years
Minimum [Member]    
Weighted average expected volatility 39.50%  
Weighted average risk-free interest rate 0.24%  
Weighted average expected life (in years) (Year) 4 years  
Vesting period (in years) (Year) 3 years  
Maximum [Member]    
Weighted average expected volatility 44.90%  
Weighted average risk-free interest rate 1.69%  
Weighted average expected life (in years) (Year) 6 years  
Vesting period (in years) (Year) 5 years