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v3.20.1

Note V - Subsequent Events (Details Textual) |  |  |  |  |  |  |  |  |  |  | 3 Months Ended | 12 Months Ended |  |
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May 12, 2020 shares | May 06, 2020 USD ($) $ / shares shares | Apr. 20, 2020 USD ($) | Apr. 02, 2020 shares | Mar. 30, 2020 USD ($) $ / shares shares | Mar. 25, 2020 USD ($) $ / shares shares | Feb. 13, 2020 USD ($) $ / shares shares | Jan. 13, 2020 USD ($) $ / shares shares | Jun. 14, 2019 shares | Apr. 04, 2019 shares | May 14, 2020 shares | Jun. 30, 2019 shares | Dec. 31, 2019 $ / shares shares | Dec. 31, 2018 shares | Mar. 31, 2020 $ / shares | Nov. 11, 2015 $ / shares
Stock Issued During Period, Shares, Commitment Fees (in shares) |  |  |  |  |  |  |  |  | 200,000 | 80,000 |  | 130,000 |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3.60
Total Warrants Exercised (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Price (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.50 |  |  |
Forecast [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sales Incentive Fee, for Each 5,000,000 Revenue Not to Exceed 20,000,000 Revenue | $ |  |  |  |  |  | $ 500,000 |  |  |  |  |  |  |  |  |  |
Sales Incentive Fee Payable in Shares, for Each 5,000,000 Revenue Not to Exceed 20,000,000 Revenue (in shares) |  |  |  |  |  | 500,000 |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares |  |  |  |  | $ 1.50 |  |  |  |  |  |  |  |  |  |  |
Sales Incentive, Maximum Number of Shares and Warrants Issuable (in shares) |  |  |  |  |  | 2,000,000 |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) |  |  |  |  |  | 500,000 |  |  |  |  |  |  |  |  |  |
Total Warrants Exercised (in shares) |  |  |  |  | 972,000 |  |  |  |  |  |  |  |  |  |  |
Proceeds from Issuance of Warrants | $ |  |  |  |  | $ 1,458,000 |  |  |  |  |  |  |  |  |  |  |
Proceeds from Paycheck Protection Program Under CARES Act | $ |  |  | $ 340,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Forecast [Member] | Directors [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Issued for Services (in shares) | 7,077 |  |  | 6,850 |  |  |  |  |  |  |  |  |  |  |  |
Forecast [Member] | A New Employee [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) |  |  |  | 5,000 |  |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Vesting Period (Year) |  |  |  | 3 years |  |  |  |  |  |  |  |  |  |  |  |
Forecast [Member] | Warrants Issuable in Connection with Sales Incentive Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sales Incentive, Covenant, Warrants Term (Year) |  |  |  |  |  | 5 years |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights, for Each 1,000,000 Revenue in Excess of 20,000,000 (in shares) |  |  |  |  |  | 100,000 |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares |  |  |  |  |  | $ 1.50 |  |  |  |  |  |  |  |  |  |
Forecast [Member] | Warrants Issued in Connection with Senior Secured Convertible Note [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares |  | $ 1.16 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) |  | 1,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Forecast [Member] | Warrants Issued in Connection with Senior Secured Convertible Note [Member] | Maxim [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Percentage of Placement Fee from Gross Proceeds from Issuance of Warrants |  | 7.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible Note Due in July 13, 2020 [Member] | Forecast [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Commitment Fees (in shares) |  |  |  |  |  |  |  |  |  |  | 50,000 |  |  |  |  |
Senior Secured Convertible Note [Member] | Forecast [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from Issuance of Debt | $ |  | $ 2,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Fee Amount | $ |  | 133,333 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount | $ |  | $ 2,415,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Number of Monthly Periodic Payments |  | 5 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Periodic Payment, Principal | $ |  | $ 268,333 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares Issued, Price Per Share (in dollars per share) | $ / shares |  | $ 1.16 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Due Diligence Fees (in shares) |  | 114,943 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Price (in dollars per share) | $ / shares |  | $ 1.16 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.65 |
Subsequent Event [Member] | Convertible Note Due in June 13, 2020 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from Issuance of Debt | $ |  |  |  |  |  |  |  | $ 157,000 |  |  |  |  |  |  |  |
Debt Instrument, Convertible, Conversion Price (in dollars per share) | $ / shares |  |  |  |  |  |  |  | $ 1.50 |  |  |  |  |  |  |  |
Debt Instrument, Convertible, Premium Payment Percentage |  |  |  |  |  |  |  | 10.00% |  |  |  |  |  |  |  |
Debt Instrument, Number of Shares Issuable for Commitment Fee (in shares) |  |  |  |  |  |  |  | 650,000 |  |  |  |  |  |  |  |
Debt Instrument, Fee Amount | $ |  |  |  |  |  |  |  | $ 75,000 |  |  |  |  |  |  |  |
Debt Instrument, Number of Shares Issuable for Commitment Fee if Debt Repayment Occurs Prior to Maturity Date (in shares) |  |  |  |  |  |  |  | 50,000 |  |  |  |  |  |  |  |
Subsequent Event [Member] | Convertible Note Due in June 13, 2020 [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Convertible, Premium Payment Percentage |  |  |  |  |  |  |  | 30.00% |  |  |  |  |  |  |  |
Subsequent Event [Member] | Convertible Note Due in July 13, 2020 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from Issuance of Debt | $ |  |  |  |  |  |  | $ 126,000 |  |  |  |  |  |  |  |  |
Debt Instrument, Convertible, Conversion Price (in dollars per share) | $ / shares |  |  |  |  |  |  | $ 1.15 |  |  |  |  |  |  |  |  |
Debt Instrument, Convertible, Premium Payment Percentage |  |  |  |  |  |  | 10.00% |  |  |  |  |  |  |  |  |
Debt Instrument, Number of Shares Issuable for Commitment Fee (in shares) |  |  |  |  |  |  | 550,000 |  |  |  |  |  |  |  |  |
Debt Instrument, Fee Amount | $ |  |  |  |  |  |  | $ 57,500 |  |  |  |  |  |  |  |  |
Debt Instrument, Number of Shares Issuable for Commitment Fee if Debt Repayment Occurs Prior to Maturity Date (in shares) |  |  |  |  |  |  | 50,000 |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Convertible Note Due in July 13, 2020 [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Convertible, Premium Payment Percentage |  |  |  |  |  |  | 30.00% |  |  |  |  |  |  |  |  |

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