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Note 2 - Summary of Significant Accounting Policies 1 (Details Textual)
12 Months Ended
Sep. 30, 2019
USD ($)
Sep. 30, 2018
USD ($)
Oct. 01, 2018
USD ($)
Other Assets, Current $ 49,000 $ 21,000  
Other Assets, Noncurrent, Total 115,000 280,000  
Retained Earnings (Accumulated Deficit), Ending Balance $ (71,489,000) (61,778,000)  
Warranty, Term 30 days    
Revenue, Remaining Performance Obligation, Amount $ 8,000    
Capitalized Software Development Costs Amortization Period 3 years    
Capitalized Computer Software, Additions $ 11 15  
Number of Reporting Units 1    
Impairment of Long-Lived Assets Held-for-use $ 0 0  
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent, Total $ 13,000 (1,000)  
Number of Reportable Segments 1    
Advertising Expense $ 425,000 465,000  
Defined Benefit Plan, Plan Assets, Contributions by Employer 0 0  
Tax Cuts and Jobs Act, Change in Tax Rate, Increase (Decrease) in Deferred Tax Asset and Related Valuation Allowance   (3,839,000)  
Tax Cuts and Jobs Act, Corporate Alternative Minimum Tax, Credit Carryforward 22,000 22,000  
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount $ 0    
Internal Use Software [Member]      
Property, Plant and Equipment, Useful Life 3 years    
Deferred Capitalized Commission Costs [Member]      
Capitalized Contract Cost, Amortization Period 3 years    
Capitalized Contract Cost, Increase (Decrease) During Period $ 70,000 $ 77,000  
Capitalized Contract Cost, Amortization $ 39,000    
Minimum [Member]      
Payment Terms 30 days    
Property, Plant and Equipment, Useful Life 3 years    
Maximum [Member]      
Payment Terms 45 days    
Property, Plant and Equipment, Useful Life 5 years    
Accounting Standards Update 2014-09 [Member]      
Other Assets, Current     $ 59,000
Other Assets, Noncurrent, Total     27,000
Retained Earnings (Accumulated Deficit), Ending Balance     $ 78,000