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Note 3 - Leases (Details Textual) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Mar. 31, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Lessee, Operating Lease, Term of Contract (Month) | 40 months |  | 40 months |
Lessee, Operating Lease, Rent Escalations, Percentage |  |  | 2.50% |
Operating Lease, Weighted Average Discount Rate, Percent | 5.00% |  | 5.00% |
Operating Lease, Expense | $ 54,460 | $ 26,122 | $ 110,720 | $ 52,244
Minimum [Member] |  |  |  |
Lessee, Operating Lease, Term of Contract (Month) | 37 months |  | 37 months |
Maximum [Member] |  |  |  |
Lessee, Operating Lease, Term of Contract (Month) | 67 months |  | 67 months |

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- Definition Represents rent escalations represented in percentage. + References No definition available. + Details
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- 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 https://asc.fasb.org/extlink&oid=128292326&loc=SL77918673-209980 + Details
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- Definition Amount of operating lease expense. Excludes sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 4 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123391704&loc=SL77918638-209977 + Details
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- Definition Weighted average discount rate for operating lease calculated at point in time. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(4) -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI https://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 + Details
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