Note 8 - Stockholders' Equity (Details Textual)
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3 Months Ended |
6 Months Ended |
9 Months Ended |
12 Months Ended |
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Sep. 30, 2022
USD ($)
$ / shares
shares
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Sep. 22, 2022
USD ($)
$ / shares
shares
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Aug. 24, 2022
USD ($)
$ / shares
shares
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Jun. 29, 2022
USD ($)
$ / shares
shares
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May 16, 2022
USD ($)
$ / shares
shares
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Mar. 29, 2022
USD ($)
$ / shares
shares
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Feb. 09, 2022
USD ($)
$ / shares
shares
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Dec. 15, 2021
USD ($)
$ / shares
shares
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Aug. 11, 2021
USD ($)
$ / shares
shares
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Jun. 30, 2021
USD ($)
$ / shares
shares
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May 12, 2021
USD ($)
$ / shares
shares
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May 02, 2021
USD ($)
$ / shares
shares
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Mar. 26, 2021
USD ($)
$ / shares
shares
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Sep. 30, 2022
USD ($)
shares
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Sep. 30, 2021
USD ($)
$ / shares
shares
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Jun. 30, 2021
USD ($)
$ / shares
shares
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Mar. 31, 2021
USD ($)
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Jun. 30, 2021
USD ($)
$ / shares
shares
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Sep. 30, 2022
USD ($)
$ / shares
shares
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Sep. 30, 2021
USD ($)
$ / shares
shares
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Dec. 31, 2021
USD ($)
shares
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| Number of Warrant Holders That Exercised Warrants |
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17
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| Stock Issued During Period, Shares, Warrant Exercise (in shares) | shares |
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3,188,190
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| Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares |
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$ 0.80
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$ 0.80
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$ 0.80
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| Stock Issued During Period Value, Warrant Exercise |
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$ 1,200,000
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$ 850,000
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$ 2,550,553
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$ 2,550,552
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| Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares |
177,571
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1,500,000
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1,062,500
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177,571
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177,571
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| Equity Amount Payable |
$ 100,862
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$ 100,862
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$ 100,862
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$ 100,862
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| Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share) | $ / shares |
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$ 0.96
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| Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) | $ / shares |
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$ 0.98
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$ 0.97
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$ 0.8289
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$ 1.75
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$ 1.48
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$ 1.80
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$ 0.61
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| Number of Employees, Awards Granted |
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1
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1
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1
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1
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5
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| Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) | shares |
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1,000,000
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45,000
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150,000
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5,000
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20,000
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67,500
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1,195,000
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637,500
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| Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Month) |
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36 months
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36 months
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36 months
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36 months
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36 months
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36 months
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| Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate |
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69.23%
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73.99%
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| Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Grant Date Intrinsic Value (in dollars per share) | $ / shares |
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$ 0.697499
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$ 0.642608
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$ 0.54
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$ 1.12
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$ 0.93
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$ 1.16
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| Share-Based Compensation Arrangement by Share-Based Payment Award, Call Option Value |
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$ 697,499
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$ 28,917
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$ 81,035
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$ 5,606
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$ 18,628
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$ 78,492
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| Warrants and Rights Outstanding |
73,469
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73,469
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$ 73,469
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| Vesting on the First Anniversary [Member] |
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| Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage |
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25.00%
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25.00%
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25.00%
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25.00%
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25.00%
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25.00%
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| Conversion of Interest Payable on Related Party Debt into Common Stock [Member] |
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| Debt Conversion, Original Debt, Amount |
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$ 161,750
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| Debt Conversion, Converted Instrument, Shares Issued (in shares) | shares |
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149,770
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| Inducement Warrant [Member] |
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| Stock Issued During Period, Shares, Warrant Exercise (in shares) | shares |
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1,062,500
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| Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares |
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$ 1.50
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$ 1.50
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$ 1.50
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| Stock Issued During Period Value, Warrant Exercise |
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$ 2,550,552
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| Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares |
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1,500,000
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1,062,500
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3,188,190
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| Warrants and Rights Outstanding, Term (Year) |
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3 years
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3 years
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3 years
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| Warrant Issuance Four [Member] |
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| Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares |
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$ 1.67
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$ 1.67
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$ 1.67
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| Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares |
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227,994
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238,066
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227,994
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227,994
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238,066
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| Warrant Exercisable Period, After Issuance Of Financing (Month) |
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36 months
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| Warrants and Rights Outstanding |
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$ 119,103
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$ 119,103
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$ 119,103
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| Warrant Issuance Four Exercise Price [Member] |
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| Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares |
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$ 119,760
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$ 119,760
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$ 119,760
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| Warrant Issuance Four Volume Weighted Average Price [Member] |
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| Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares |
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108,234
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108,234
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108,234
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| Warrant Issuance Five [Member] |
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| Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares |
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10,072
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| Warrant Exercisable Period, After Issuance Of Financing (Month) |
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36 months
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| Warrants and Rights Outstanding |
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$ 5,285
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| Warrant Issuance Three [Member] |
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| Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares |
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$ 2.06
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$ 2.06
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| Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares |
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2,666,459
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2,666,459
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| Warrant Issuance [Member] |
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| Share-Based Payment Arrangement, Expense |
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$ 382,048
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| Stock Issued During Period, Shares, Warrant Exercise (in shares) | shares |
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1,062,500
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| Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares |
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$ 0.80
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| Stock Issued During Period Value, Warrant Exercise |
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$ 1,200,000
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$ 850,000
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| Warrant Issuance One [Member] |
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| Stock Issued During Period, Shares, Warrant Exercise (in shares) | shares |
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1,500,000
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| Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares |
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$ 1.50
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| Warrant Issuance Two [Member] |
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| Stock Issued During Period, Shares, Warrant Exercise (in shares) | shares |
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1,500,000
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| Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares |
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$ 0.80
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| Restricted Stock Units (RSUs) [Member] |
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| Share-Based Payment Arrangement, Expense |
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65,002
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$ 121,635
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$ 195,005
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$ 311,352
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| Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount |
$ 0
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$ 0
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0
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| Restricted Stock Units (RSUs) [Member] | Board Of Directors [Member] |
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| Share-Based Payment Arrangement, Expense |
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$ 65,000
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$ 65,000
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$ 65,000
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195,005
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$ 260,005
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| Number of Employees, Awards Granted |
4
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4
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4
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4
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4
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4
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4
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| Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) | shares |
65,100
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54,168
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78,420
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42,484
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37,143
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38,924
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36,112
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| Share-Based Compensation Arrangement By Share Based Payment Award, Equity Instruments Other Than Options, Grants In Period, Value |
$ 65,002
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$ 65,002
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$ 65,002
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$ 65,000
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$ 65,000
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$ 65,002
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$ 65,002
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| Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Intrinsic Value, Amount Per Share (in dollars per share) | $ / shares |
$ 9,985
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$ 1.20
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$ 0.829
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$ 1.53
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$ 1.75
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$ 1.67
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$ 1.80
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| Restricted Stock Units (RSUs) [Member] | Employees [Member] |
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| Share-Based Payment Arrangement, Expense |
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799,379
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187,501
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| Number of Employees, Awards Granted |
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1
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| Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) | shares |
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1,000,000
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| Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Intrinsic Value, Amount Per Share (in dollars per share) | $ / shares |
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$ 1.80
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| Restricted Stock Units (RSUs) [Member] | Director [Member] |
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| Share-Based Payment Arrangement, Expense |
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$ 195,005
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$ 260,003
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| Warrants [Member] |
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| Share-Based Payment Arrangement, Expense |
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$ 382,048
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| Share-Based Payment Arrangement, Option [Member] |
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| Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate |
|
76.15%
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73.45%
|
72.33%
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73.29%
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74.79%
|
73.97%
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