Note 1 - Basis of Presentation (Details Textual) - USD ($)  | 
Jun. 30, 2020  | 
Oct. 01, 2019  | 
Sep. 30, 2019  | 
|---|---|---|---|
| Operating Lease, Right-of-Use Asset | $ 2,710,073 | $ 0 | |
| Operating Lease, Liability, Total | $ 2,972,219 | ||
| Accounting Standards Update 2016-02 [Member] | |||
| Operating Lease, Right-of-Use Asset | $ 2,400,000 | ||
| Operating Lease, Liability, Total | $ 2,600,000 | 
| X | ||||||||||
- Definition Present value of lessee's discounted obligation for lease payments from operating lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
  | 
| X | ||||||||||
- Definition Amount of lessee's right to use underlying asset under operating lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
  | 
| X | ||||||||||
- Details 
  |