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Note 8 - Long-term Debt - Summary of Long-term Debt (Details) (Parentheticals) - USD ($) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2022 | Dec. 31, 2022 | Dec. 31, 2021
Loan Agreement to Fund Machinery Acquisition [Member] |  |  |
Debt Instrument, Periodic Payment, Total | $ 8,352 | $ 8,000 |
Debt Instrument, Interest Rate, Stated Percentage | 6.00% | 6.00% |
HSBC Bank Mortgage Loan [Member] |  |  |
Debt Instrument, Periodic Payment, Total |  |  | $ 25,000
Debt Instrument, Interest Rate, Stated Percentage |  |  | 1.86%
HSBC Bank Mortgage Loan [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  | 1.75%
HSBC Bank Mortgage Loan [Member] | Prime Rate [Member] |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  | 0.50%

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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