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Note 13 - Commitments and Contingencies (Tables)
12 Months Ended
Sep. 30, 2018
Notes Tables  
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]
Years ending September 30,
       
2019
  $
626,277
 
2020
   
1,018,685
 
2021
   
1,030,380
 
2022
   
1,072,300
 
2023
   
995,554
 
Thereafter
   
5,255,394
 
Total lease obligations
  $
9,998,590