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Note 4 - Debts and Commitments (Tables)
12 Months Ended
Sep. 30, 2017
Notes Tables  
Contractual Obligation, Fiscal Year Maturity Schedule [Table Text Block]
   
Payments due by Fiscal Year
 
   
 
2018
   
 
2019
   
 
2020
   
 
2021
   
 
2022
   
2023
and after
   
 
Total
 
Real estate loan
  $
115,000
    $
124,000
    $
126,000
    $
133,000
    $
139,000
    $
1,434,000
    $
2,071,000
 
Obligations under operating leases
   
858,000
     
689,000
     
308,000
     
19,000
     
---
     
---
     
1,874,000
 
Long-term accrued liabilities*
   
---
     
23,000
     
9,000
     
5,000
     
4,000
     
94,000
     
135,000
 
    $
973,000
    $
836,000
    $
443,000
    $
157,000
    $
143,000
    $
1,528,000
    $
4,080,000