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Note 9 - Bank Debt (Details Textual) |  | 3 Months Ended | 9 Months Ended | 12 Months Ended | 27 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2021 USD ($) | Sep. 30, 2025 USD ($) | Sep. 30, 2023 USD ($) | Dec. 31, 2022 | Mar. 31, 2022 USD ($) | Dec. 31, 2020 USD ($) | Jun. 30, 2020 USD ($) | Mar. 31, 2020 USD ($) | Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Dec. 31, 2025 | Mar. 31, 2022 USD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2021 USD ($)
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net |  | $ 97,522 |  |  |  |  |  |  | $ 97,522 |  |  |  | $ 173,305 |
Forecast [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Service Charge Ratio |  |  |  |  |  |  |  |  |  |  | 1.35 |  |  |
Maine Community Bank [Member] | Line of Credit [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-Term Line of Credit |  | 0 |  |  |  |  |  |  | 0 |  |  |  | $ 0 |
Line of Credit Facility, Maximum Borrowing Capacity |  | 1,000,000 |  |  |  |  |  |  | 1,000,000 |  |  |  |  |
Debt Instrument, Debt Financing [Member] | Maine Community Bank [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  | $ 8,600,000 |  |  |  |  |  |
Debt Instrument, Debt Financing One [Member] | Maine Community Bank [Member] | Mortgages [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  | $ 5,100,000 |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  | 3.50% |  |  |  |  |  | 3.53%
Debt Instrument, Term (Year) |  |  |  |  |  |  |  | 10 years |  |  |  |  |  |
Debt Instrument, Amortization Schedule (Year) |  |  |  |  |  |  |  | 25 years |  |  |  |  |  |
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid |  |  |  |  | $ 3,687,726 |  |  | $ 3,145,888 |  |  |  | $ 3,687,726 |  | $ 3,145,888
Debt Instrument, Principal, Outstanding Balance |  |  |  |  | $ 6,233,957 |  |  |  |  |  |  | $ 6,233,957 |  | $ 4,233,957
Debt Instrument, Debt Financing Two [Member] | Maine Community Bank [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  | $ 3,500,000 |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  | 3.50% |  |  |  |  |  |
Debt Instrument, Term (Year) |  |  |  |  |  |  |  |  |  |  |  | 7 years |  |
Debt Instrument, Amortization Schedule (Year) |  |  |  |  |  |  |  |  |  |  |  | 7 years |  |
Debt Instrument, Debt Financing Three [Member] | Maine Community Bank [Member] | Mortgages [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  | 3.58% |  |  |  |  |  |  | 3.58% |  |
Debt Instrument, Increase (Decrease), Net |  |  |  |  | $ (2,000,000) |  |  |  |  |  |  |  |  |
Debt Instrument, Debt Financing Three [Member] | Maine Technology Institute [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  | $ 500,000 |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  | 5.00% |  |  |  |  |  |  |  |  |  |
Debt Instrument, Term (Year) |  |  |  | 5 years |  |  |  |  |  |  |  |  |  |
Debt Instrument, Period, Interest-free (Year) |  |  |  |  |  |  | 2 years 3 months |  |  |  |  |  |  |
Debt Instrument, Periodic Payment, Interest |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |
Debt Instrument, Periodic Payment, Principal |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |
Debt Instrument, Debt Financing Four [Member] | Maine Community Bank [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  | $ 1,500,000 |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  | 3.50% |  |  |  |  |  |  |  |
Debt Instrument, Term (Year) |  |  |  |  |  | 7 years |  |  |  |  |  |  |  |
Debt Instrument, Amortization Schedule (Year) |  |  |  |  |  | 7 years |  |  |  |  |  |  |  |
Proceeds from Issuance of Long-Term Debt |  |  |  |  |  | $ 624,167 |  |  |  |  |  |  |  |
Loan to Value Ratio |  |  |  |  |  | 80 |  |  |  |  |  |  |  |
Escrow Deposit |  |  |  |  |  | $ 1,400,000 |  |  |  |  |  |  |  |
Debt Instrument, Debt Financing Five [Member] | Maine Technology Institute [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount | $ 400,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 5.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Term (Year) | 5 years 6 months |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Period, Interest-free (Year) | 2 years |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Periodic Payment, Interest | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Debt Financing Six [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Amortization Schedule (Year) |  |  | 7 years |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Debt Financing Six [Member] | Maine Community Bank [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  | $ 2,000,000 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  | 7.00% |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Refinanced, Amount |  | 1,525,852 |  |  |  |  |  |  | 1,525,852 | $ 0 |  |  |  |
Debt Instrument, Debt Financing Six [Member] | Finance Authority of Maine [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  | $ 1,000,000 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid |  |  | 1,285,029 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Debt Financing Seven [Member] | Finance Authority of Maine [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  | $ 1,000,000 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  | 8.00% |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Amortization Schedule (Year) |  |  | 7 years |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid |  |  | $ 649,267 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Refinanced, Amount |  | 768,209 |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Debt Financing Eight [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  | $ 2,327,119 |  |  |  |  |  |  | $ 2,327,119 |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 6.50% |  |  |  |  |  |  | 6.50% |  |  |  |  |
Debt Instrument, Term (Year) |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Periodic Payment |  | $ 45,637 |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482949/835-30-55-8 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69B -Publisher FASB -URI https://asc.fasb.org/1943274/2147481568/470-20-55-69B Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69C -Publisher FASB -URI https://asc.fasb.org/1943274/2147481568/470-20-55-69C Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482900/835-30-50-1 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482925/835-30-45-2 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)(a)(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B + Details
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- Definition Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Amount of unamortized debt discount (premium) and debt issuance costs. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482949/835-30-55-8 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69B -Publisher FASB -URI https://asc.fasb.org/1943274/2147481568/470-20-55-69B Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69C -Publisher FASB -URI https://asc.fasb.org/1943274/2147481568/470-20-55-69C Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1D -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1D Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482900/835-30-50-1 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482925/835-30-45-2 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-4 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 1A -Publisher FASB -URI https://asc.fasb.org/1943274/2147482925/835-30-45-1A + Details
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- Definition The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 954 -SubTopic 440 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478522/954-440-50-1 + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)(a)(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
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