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Note 2 - Fair Value of Financial Instruments (Tables)
 3 Months Ended
Dec. 31, 2016
Notes Tables  
Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Table Text Block]
   
Total
    
Quoted
prices in
active
markets
(Level 1)
    
Significant
other
observable
inputs
(Level 2)
    
Significant
unobservable
inputs
(Level 3)
  
Cash value of life insurance policies:
                                
December 31, 2016
   $
2,771,433
      
-
     $
2,771,433
      
-
  
October 1, 2016
   $
2,697,465
      
-
     $
2,697,465
      
-