v3.21.2

Note 5 - Stockholders' Equity (Deficit) (Details Textual) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2018	Dec. 31, 2016	Dec. 31, 2020
Common Stock, Shares Authorized (in shares)	50,000,000		50,000,000				50,000,000
Common Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.00001		$ 0.00001				$ 0.00001
Stock Issued During Period, Shares, Issued for Services (in shares)			12,278
Stock Issued During Period, Value, Issued for Services	$ 249,980	$ 145,200	$ 249,980	$ 145,200
Class of Warrant or Right, Exercised During Period (in shares)			280,681
Common Stock [Member]
Stock Issued During Period, Shares, Issued for Services (in shares)	12,278	60,000	12,278	60,000
Stock Issued During Period, Value, Issued for Services	$ 0	$ 1	$ 0	$ 1
Stock Issued During Period, Shares, Cashless Warrant Exercised (in shares)	39,395		100,879
Share-based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)			0	0
Share-based Payment Arrangement, Expense	$ 4,123	26,161	$ 10,770	$ 278,233
Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount	632		$ 632
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)			1 month 6 days
Restricted Stock Units (RSUs) [Member]
Share-based Payment Arrangement, Expense	1,939,766	$ 121,797	$ 5,700,793	$ 284,897
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)			2 years 7 months 6 days
Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount	$ 6,213,390		$ 6,213,390
Restricted Stock Units (RSUs) [Member] | Employee [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)			390,366
Restricted Stock Units (RSUs) [Member] | Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)			265,000
Restricted Stock Units (RSUs) [Member] | Board Members [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)			206,068
Restricted Stock Units (RSUs) [Member] | Board Members [Member] | Share-based Payment Arrangement, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage			50.00%
Restricted Stock Units (RSUs) [Member] | Board Members [Member] | Share-based Payment Arrangement, Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage			50.00%
The 2016 Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award Plan, Expiration Period (Year)						10 years
The 2018 Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award Plan, Expiration Period (Year)					10 years

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