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Note 8 - Commitments (Details Textual) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2021 USD ($) ft² | Sep. 30, 2020 USD ($) | Sep. 30, 2021 USD ($) ft² | Sep. 30, 2020 USD ($) | Dec. 31, 2020 USD ($) ft²
Area of Real Estate Property (Square Foot) | ft² |  |  |  |  | 8,400
Lessee, Operating Lease, Liability, to be Paid, Year One |  |  |  |  | $ 171,213
Unrecorded Unconditional Purchase Obligation, Total | $ 607,000 |  | $ 607,000 |  | $ 190,000
Office and Laboratory Lease Agreement [Member] |  |  |  |  |
Area of Real Estate Property (Square Foot) | ft² | 8,400 |  | 8,400 |  |
Operating Lease, Expense | $ 42,803 | $ 41,539 | $ 128,410 | $ 124,617 |
Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year | 42,803 |  | 42,803 |  |
Lessee, Operating Lease, Liability, to be Paid, Year One | $ 176,356 |  | $ 176,356 |  |

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- Definition Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 + Details
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- Definition Amount of lessee's undiscounted obligation for lease payment for operating lease having initial or remaining lease term in excess of one year to be paid in remainder of current fiscal year. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 + 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 http://asc.fasb.org/extlink&oid=123391704&loc=SL77918638-209977 + Details
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- Definition Amount of the unrecorded obligation to transfer funds in the future for fixed or minimum amounts or quantities of goods or services at fixed or minimum prices (for example, as in take-or-pay contracts or throughput contracts). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123406679&loc=d3e25336-109308 + Details
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