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Note 11 - Accrued Liabilities (Tables)
9 Months Ended
Jun. 30, 2021
Notes Tables  
Schedule of Accrued Liabilities [Table Text Block]
   

June 30,

   

September 30,

 
   

2021

   

2020

 

Payroll and related

  $ 2,705     $ 2,545  

Deferred revenue

    748       731  

Customer deposits

    9,439       3,683  

Accrued contract costs

    89       719  

Warranty reserve

    143       126  

Other

    181       76  

Total

  $ 13,305     $ 7,880  
Other Noncurrent Liabilities [Table Text Block]
   

June 30,

   

September 30,

 
   

2021

   

2020

 

Deferred extended warranty revenue

  $ 344     $ 293  

Customer deposits

    1,654       -  

Deferred tax liabilities

    2,729       -  

Asset purchase holdback liability

    693       -  

Total

  $ 5,420     $ 293  
Schedule of Product Warranty Liability [Table Text Block]
   

June 30,

   

September 30,

 
   

2021

   

2020

 

Beginning balance

  $ 126     $ 150  

Warranty provision

    44       16  

Warranty settlements

    (27 )     (40 )

Ending balance

  $ 143     $ 126