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Note 9 - Bank Debt - Debt Proceeds Received and Principal Repayments Made (Details) - USD ($) | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024 | Dec. 31, 2023
Proceeds from Issuance of Debt | $ 2,327,119 | $ 0 | $ 2,327,119 | $ 0 | $ 0 | $ 3,000,000
Repayments of Bank Debt | 2,650,175 | 368,249 | 3,411,719 | 1,094,106 | 1,468,338 | 1,185,774
Debt Instrument, Debt Financing One [Member] |  |  |  |  |  |
Proceeds from Issuance of Debt | 0 | 0 | 0 | 0 | 0 | 0
Repayments of Bank Debt | 59,798 | 57,671 | 178,865 | 172,017 | 230,763 | 223,222
Debt Instrument, Debt Financing Two [Member] |  |  |  |  |  |
Proceeds from Issuance of Debt | 0 | 0 | 0 | 0 | 0 | 0
Repayments of Bank Debt | 133,203 | 128,534 | 396,276 | 382,324 | 512,139 | 494,455
Debt Instrument, Debt Financing Three [Member] |  |  |  |  |  |
Proceeds from Issuance of Debt | 0 | 0 | 0 | 0 | 0 | 0
Repayments of Bank Debt | 25,405 | 24,173 | 75,278 | 71,629 | 96,104 | 91,446
Debt Instrument, Debt Financing Four [Member] |  |  |  |  |  |
Proceeds from Issuance of Debt | 0 | 0 | 0 | 0 | 0 | 0
Repayments of Bank Debt | 55,453 | 53,505 | 165,007 | 159,171 | 213,227 | 205,884
Debt Instrument, Debt Financing Five [Member] |  |  |  |  |  |
Proceeds from Issuance of Debt | 0 | 0 | 0 | 0 | 0 | 0
Repayments of Bank Debt | 17,571 | 16,719 | 52,066 | 49,542 | 66,470 | 32,017
Debt Instrument, Debt Financing Six [Member] |  |  |  |  |  |
Proceeds from Issuance of Debt | 0 | 0 | 0 | 0 | 0 | 2,000,000
Repayments of Bank Debt | 1,547,119 | 59,191 | 1,671,553 | 174,804 | 235,393 | 93,054
Debt Instrument, Debt Financing Seven [Member] |  |  |  |  |  |
Proceeds from Issuance of Debt | 0 | 0 | 0 | 0 | 0 | 1,000,000
Repayments of Bank Debt | 779,015 | 28,456 | 840,062 | 84,619 | $ 114,242 | $ 45,696
Debt Instrument, Debt Financing Eight [Member] |  |  |  |  |  |
Proceeds from Issuance of Debt | 2,327,119 | 0 | 2,327,119 | 0 |  |
Repayments of Bank Debt | $ 32,611 | $ 0 | $ 32,612 | $ 0 |  |

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- Definition The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 14 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-14 + Details
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- Definition The cash outflow to settle a bank borrowing during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 15 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-15 + Details
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