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Note 7 - Commitments (Details Textual) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 USD ($) ft² | Dec. 31, 2019 USD ($) | Sep. 30, 2021 USD ($)
Area of Real Estate Property (Square Foot) | ft² | 8,400 |  |
Operating Leases, Rent Expense, Total | $ 166,577 | $ 161,673 |
Lessee, Operating Lease, Liability, to be Paid, Year One | 171,213 |  |
Lessee, Operating Lease, Liability, to be Paid, Year Two | 176,356 |  |
Unrecorded Unconditional Purchase Obligation, Total | 190,000 |  | $ 607,000
Unrecorded Unconditional Purchase Obligation Reimbursable, Amount | $ 165,500 |  |

X
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X
- Definition Area of a real estate property. + References No definition available. + Details
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X
- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References No definition available. + Details
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X
- 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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X
- Definition Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in second 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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X
- 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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