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Note 4 - Debts and Commitments (Tables)
12 Months Ended
Sep. 30, 2018
Notes Tables  
Contractual Obligation, Fiscal Year Maturity Schedule [Table Text Block]
   
Payments due by Fiscal Year
 
   
 
2019
   
 
2020
   
 
2021
   
 
2022
   
 
2023
   
2024
and after
   
 
Total
 
Real estate loan
  $
121,000
    $
126,000
    $
133,000
    $
139,000
    $
146,000
    $
1,291,000
    $
1,956,000
 
Obligations under operating leases
   
848,000
     
331,000
     
19,000
     
---
     
---
     
---
     
1,198,000
 
Long-term accrued liabilities*
   
---
     
20,000
     
6,000
     
4,000
     
12,000
     
128,000
     
170,000
 
    $
969,000
    $
477,000
    $
158,000
    $
143,000
    $
158,000
    $
1,419,000
    $
3,324,000