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Note 7 - Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2019
Notes Tables  
Lease, Cost [Table Text Block]
Operating lease cost
  $
374,667
 
Variable lease costs
   
20,523
 
Sublease income
   
(234,098
)
Total lease costs
  $
161,092
 
Lessee, Operating Lease, Liability, Maturity [Table Text Block]
2020
  $
356,196
 
2021
   
262,850
 
2022
   
60,819
 
2023
   
60,264
 
2024
   
30,132
 
Total
   
770,261
 
         
Discount factor
   
(90,435
)
Total lease liability
   
679,826
 
Current lease liability
   
(304,603
)
Non-current lease liability
  $
375,223