Quarterly report pursuant to Section 13 or 15(d)

Share-based Compensation (Narrative) (Details)

v3.21.2
Share-based Compensation (Narrative) (Details) - USD ($)
3 Months Ended 9 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Jul. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock option conversion ratio     100.00%    
Proceeds from stock option exercises     $ 1,538,147 $ 415,464  
Cashless options, exercises in period     0    
Expense recognized $ 1,900,085 $ 685,314 $ 3,687,663 1,981,492  
Outside Directors [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Expense recognized $ 536,000   $ 536,000    
Stock Option [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting period     3 years    
Share price $ 8.07   $ 8.07    
Options, exercises in period, intrinsic value     $ 8,300,000 $ 1,100,000  
Issuance of common stock upon cashless exercise of options       143,958  
Cashless options, exercises in period       223,415  
Unrecognized compensation expense, stock options $ 10,600,000   $ 10,600,000    
Unrecognized compensation expense, period for recognition     1 year 9 months 18 days    
Stock Option [Member] | Maximum [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award term     10 years    
Stock Appreciation Rights (SARs) [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award term     10 years    
Exercise price per share $ 0.95   $ 0.95    
Vested shares 50,000   50,000    
Stock Appreciation Rights (SARs) [Member] | The APP Merger [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vest date     Oct. 31, 2018    
Stock Appreciation Rights (SARs) [Member] | Employee [Member] | The APP Merger [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of shares issued     50,000    
Stock Appreciation Rights (SARs) [Member] | Outside Directors [Member] | The APP Merger [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of shares issued     140,000    
2008 Stock Incentive Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of shares authorized 0   0    
2017 Equity Incentive Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of shares authorized         4,700,000
Number of shares available 18,433   18,433    
2018 Equity Incentive Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of shares authorized 11,000,000.0   11,000,000.0    
Number of shares available 2,848,780   2,848,780