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6. SHARE-BASED COMPENSATION (Details - Options by exercise price) - $ / shares
6 Months Ended
Mar. 31, 2020
Sep. 30, 2019
Options [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Options Outstanding, Weighted average exercise price $ 1.51 $ 1.69
Options Outstanding, Outstanding Number of Options 1,004,397 812,879
Options Exercisable, Weighted Average Remaining Life In Years 3 years 7 months 6 days  
Options Exercisable, Exercisable Number of Options 736,688  
$0.64 to $1.23 [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Exercise price lower limit $ 0.64  
Exercise price upper limit 1.23  
Options Outstanding, Weighted average exercise price $ 1.05  
Options Outstanding, Outstanding Number of Options 325,519  
Options Exercisable, Weighted average exercise price $ 0.8  
Options Exercisable, Weighted Average Remaining Life In Years 4 years 7 months 6 days  
Options Exercisable, Exercisable Number of Options 77,500  
$1.44 to $1.67 [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Exercise price lower limit $ 1.44  
Exercise price upper limit 1.67  
Options Outstanding, Weighted average exercise price $ 1.51  
Options Outstanding, Outstanding Number of Options 605,378  
Options Exercisable, Weighted average exercise price $ 1.49  
Options Exercisable, Weighted Average Remaining Life In Years 3 years 9 months 18 days  
Options Exercisable, Exercisable Number of Options 585,688  
$2.73 to $2.73 [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Exercise price lower limit $ 2.73  
Exercise price upper limit 2.73  
Options Outstanding, Weighted average exercise price $ 2.73  
Options Outstanding, Outstanding Number of Options 11,000  
Options Exercisable, Weighted average exercise price $ 2.48  
Options Exercisable, Weighted Average Remaining Life In Years 1 year 4 months 24 days  
Options Exercisable, Exercisable Number of Options 11,000  
$3.73 to $3.79 [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Exercise price lower limit $ 3.73  
Exercise price upper limit 3.79  
Options Outstanding, Weighted average exercise price $ 3.74  
Options Outstanding, Outstanding Number of Options 62,500  
Options Exercisable, Weighted average exercise price $ 3.74  
Options Exercisable, Weighted Average Remaining Life In Years 10 months 25 days  
Options Exercisable, Exercisable Number of Options 62,500