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Note 7 - Accrued And Other Liabilities - Noncurrent (Tables)
6 Months Ended
Mar. 31, 2016
Warranty Reserves [Member]  
Notes Tables  
Schedule of Product Warranty Liability [Table Text Block]
 
 
March 31,
2016
 
 
September 30,
2015
 
 
March 31,
2016
 
 
September 30,
2015
 
Short-term warranty reserve
  $ 253,801     $ 289,660     $ 253,801     $ 289,660  
Long-term warranty reserve
    64,021       25,958       64,021       25,958  
Total warranty reserve
  $ 317,822     $ 315,618     $ 317,822     $ 315,618  
Schedule of Accrued Liabilities [Table Text Block]
 
 
March 31,
2016
 
 
September 30,
2015
 
                 
Payroll and related
  $ 969,724     $ 330,916  
Deferred revenue
    795,532       51,345  
Warranty reserve
    253,801       289,660  
Accrued contract costs
    -       197,034  
Other
    -       1,600  
Total
  $ 2,019,057     $ 870,555  
                 
                 
Other liabilities - noncurrent consisted of the following:
               
                 
Deferred rent
  $ 110,078     $ 121,996  
Extended warranty
    64,021       25,958  
Total
  $ 174,099     $ 147,954  
Schedule of Product Warranty Liability [Table Text Block]
 
 
Three month ended
March 31,
 
 
Six months ended
March 31,
 
 
 
2016
 
 
2015
 
 
2016
 
 
2015
 
Beginning balance
  $ 292,379     $ 325,107     $ 315,618     $ 314,311  
Warranty provision
    48,570       21,476       26,303       40,674  
Warranty settlements
    (23,127 )     (19,347 )     (24,099 )     (27,749 )
Ending balance
  $ 317,822     $ 327,236     $ 317,822     $ 327,236