Quarterly report pursuant to Section 13 or 15(d)

Share-based Compensation (Narrative) (Details)

v3.20.1
Share-based Compensation (Narrative) (Details) - USD ($)
6 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Mar. 24, 2020
Jul. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Proceeds from stock option exercises $ 408,632 $ 200,000    
Stock Option [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting period 3 years      
Issuance of common stock upon cashless exercise of options 143,958      
Cashless options, exercises in period 223,415      
Options, exercises in period, intrinsic value $ 1,100,000 $ 48,000    
Shares exercised 436,748      
Share price $ 3.27      
Unrecognized compensation expense, stock options $ 4,100,000      
Unrecognized compensation expense, period for recognition 3 years      
Stock Appreciation Rights (SARs) [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award expiration period 10 years      
Exercise price per share $ 0.95      
Vested shares outstanding 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      
Maximum [Member] | Stock Option [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award expiration period 10 years      
2008 Stock Incentive Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares authorized 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 70,181      
2018 Equity Incentive Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares authorized     11,000,000  
Number of shares available 5,876,321