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Note 10 - Accrued and Other Liabilities (Tables)
12 Months Ended
Sep. 30, 2020
Notes Tables  
Schedule of Accrued Liabilities [Table Text Block]
   
September 30,
 
   
2020
   
2019
 
Payroll and related
  $
2,545
    $
2,050
 
Deferred revenue
   
731
     
509
 
Customer deposits
   
3,683
     
5,063
 
Foreign currency forward contract liability
   
5,281
     
-
 
Accrued contract costs
   
719
     
253
 
Warranty reserve
   
126
     
150
 
Deferred rent
   
-
     
109
 
Total
  $
13,085
    $
8,134
 
Other Noncurrent Liabilities [Table Text Block]
   
September 30,
 
   
2020
   
2019
 
Deferred rent
  $
-
    $
1,881
 
Deferred extended warranty revenue
   
293
     
551
 
Total
  $
293
    $
2,432
 
Schedule of Product Warranty Liability [Table Text Block]
   
September 30,
 
   
2020
   
2019
 
Beginning balance
  $
150
    $
99
 
Warranty provision
   
16
     
85
 
Warranty settlements
   
(40
)    
(34
)
Ending balance
  $
126
    $
150