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Note 10 - Accrued and Other Liabilities (Tables)
9 Months Ended
Jun. 30, 2023
Notes Tables  
Schedule of Accrued Liabilities [Table Text Block]
   

June 30,

   

September 30,

 
   

2023

   

2022

 

Payroll and related

  $ 2,539     $ 3,003  

Deferred revenue

    2,094       1,827  

Customer deposits

    1,957       4,724  

Accrued contract costs

    672       809  

Warranty reserve

    153       159  

Canadian goods and services and harmonized sales tax payable

    -       1,556  

Asset purchase holdback liability

    742       -  

Other

    25       5  

Total

  $ 8,182     $ 12,083  
Other Noncurrent Liabilities [Table Text Block]
   

June 30,

   

September 30,

 
   

2023

   

2022

 

Deferred revenue

  $ 116     $ 227  

Asset purchase holdback liability

    -       680  

Total

  $ 116     $ 907  
Schedule of Product Warranty Liability [Table Text Block]
   

June 30,

   

September 30,

 
   

2023

   

2022

 

Beginning balance

  $ 159     $ 146  

Warranty provision

    57       86  

Warranty settlements

    (63 )     (73 )

Ending balance

  $ 153     $ 159