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Note 9 - Commitments and Contingencies (Tables)
3 Months Ended
Mar. 31, 2020
Notes Tables  
Other Commitments [Table Text Block]
2020 (remainder of year)
  $
680,730
 
2021
   
60,000
 
2022
   
70,000
 
2023
   
80,000
 
Thereafter
   
-
 
Total
  $
890,730
 
Lessee, Operating Lease, Liability, Maturity [Table Text Block]
   
Operating Lease
 
Undiscounted future minimum lease payments:
       
2020 (remainder of year)
  $
129,186
 
2021
   
172,248
 
2022
   
100,478
 
Total
  $
401,912
 
Amount representing imputed interest
   
(52,876
)
Total operating lease liability
   
349,036
 
Current portion of operating lease liability
   
(101,777
)
Operating Lease Liability, non-current
  $
247,259
 
   
As of March 31, 2020
 
Remaining term on Lease
   
2.25
 
Incremental borrowing rate
   
12
%