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Note 8 - Commitments and Contingencies (Details Textual) |  |  |  |  | 1 Months Ended | 2 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 17, 2020 USD ($) | Mar. 17, 2020 USD ($) | Mar. 06, 2020 USD ($) | Jan. 01, 2020 USD ($) | Mar. 18, 2019 USD ($) | Jun. 30, 2020 USD ($) | Mar. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Apr. 30, 2019 USD ($) | Mar. 31, 2021 USD ($) | Dec. 31, 2019 USD ($) | Mar. 31, 2021 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
SBS Bankruptcy and Settlement [Member] | Robert G. Brown [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Damages Sought, Value | $ 3,000,000 | $ 1,300,000 | $ 1,707,374 |  |  |  |  |  |  |  |  |  |  |
SBS Bankruptcy and Settlement [Member] | Robert G. Brown and William H. Bartels [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Damages Sought, Value |  |  |  |  |  |  |  |  |  | $ 5,600,000 |  |  |  |
Litigation Settlement, Amount Awarded to Other Party | 3,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
SBS Bankruptcy, Settlement and March 2020 Claim [Member] | Robert G. Brown [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Yearly Damages Sought, Value | $ 500,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Bartels Advancement Settlement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Damages Paid, Value |  |  |  |  |  |  |  |  | $ 106,000 |  |  |  |  |
Reimbursement for SMF's funding of the Affinity Security Deposits [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Damages Sought, Value |  |  |  |  | $ 378,838 |  |  |  |  |  |  |  |  |
Reimbursement for SMF's Funding of the Field Payment Checks [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Damages Sought, Value |  |  |  |  | 12,963 |  |  |  |  |  |  |  |  |
SBS Clothier Litigation [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Damages Paid, Value |  |  |  |  |  |  |  | $ 325,000 |  |  |  | $ 650,000 |  |
Loss Contingency, Damages Sought, Value |  |  |  |  | $ 1,839,459 |  |  |  |  |  |  |  |  |
Litigation Settlement, Amount Awarded to Other Party |  |  |  |  |  |  |  |  |  |  | $ 250,000 |  |  |
Settlement and Other Charges |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,300,000
Loss Contingency, Damages Number of Equal Annual Installments |  |  |  |  |  |  |  |  |  |  |  |  | 4 |
Loss Contingency Accrual, Ending Balance |  |  |  |  |  |  |  |  |  | 650,000 |  | 650,000 |  |
Settlement Agreement with SBS [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Damages Sought, Value |  |  |  | $ 2,200,000 |  |  |  |  |  |  |  |  |  |
Litigation Settlement, Amount Awarded from Other Party |  |  |  | $ 174,097 |  |  |  |  |  |  |  |  | $ 174,097 |
Settlement Agreement, Number of Monthly Installments |  |  |  | 24 |  |  |  |  |  |  |  |  |  |
Loss Contingency, Settlement Amount in Default |  |  |  |  |  |  |  |  |  | $ 108,810 |  | $ 108,810 |  |
SBS and SGRP Hogan Litigation [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Damages Paid, Value |  |  |  |  |  | $ 50,000 | $ 50,000 | $ 150,000 |  |  |  |  |  |
Litigation Settlement, Amount Awarded to Other Party |  |  |  |  |  |  | 618,000 |  |  |  |  |  |  |
Loss Contingency, Damages Number of Installments |  |  |  |  |  |  |  |  |  |  | 3 |  |  |
Rodgers Settlement With SBS [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Settlement, Periodic Payment |  |  |  |  |  |  | $ 48,000 |  |  |  |  |  |  |

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