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Note 14 - Subsequent Events (Details Textual) |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Mar. 19, 2021 shares | Jan. 29, 2021 USD ($) a | Jan. 04, 2021 USD ($) ft² | Dec. 31, 2020 USD ($) ft²
The United States of America [Member] |  |  |  |
Area of Real Estate Property (Square Foot) | ft² |  |  |  | 16,153
Monthly Base Rent Expense |  |  |  | $ 13,000
Subsequent Event [Member] | The Merger Agreement [Member] |  |  |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares) | shares | 6,646,870 |  |  |
Business Acquisition, Percentage of Equity Issuable Shares Held in Escrow Accounts for Post Closing Claims | 19.90% |  |  |
Subsequent Event [Member] | The United States of America [Member] |  |  |  |
Area of Real Estate Property (Square Foot) | ft² |  |  | 16,800 |
Monthly Base Rent Expense |  |  | $ 13,650 |
Yearly Percentage Increase (Decrease) in Operating Lease |  |  | 3.00% |
Subsequent Event [Member] | Lease Agreement in the United States Beginning June 1, 2021 [Member] |  |  |  |
Area of Real Estate Property (Square Foot) | a |  | 26,800 |  |
Monthly Base Rent Expense |  | $ 26,800 |  |
Yearly Percentage Increase (Decrease) in Operating Lease |  | 2.50% |  |
Lessee, Operating Lease, Term of Contract (Year) |  | 10 years |  |

X
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X
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X
- Definition Number of shares of equity interests issued or issuable to acquire entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(4) -URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479 + Details
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X
- Definition Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918673-209980 + Details
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- Details
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