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Note 10 - Prepaid Expenses and Other (Tables)
9 Months Ended
Jun. 30, 2021
Notes Tables  
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block]
   

June 30,

   

September 30,

 
   

2021

   

2020

 

Deposits for inventory

  $ 528     $ 54  

Prepaid insurance

    355       264  

Dues and subscriptions

    255       151  

Trade shows and travel

    95       103  

Other

    231       288  
    $ 1,464     $ 860