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Note 3 - Long-term Debt Financing (Details Textual) |  |  |  | 3 Months Ended | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 18, 2024 USD ($) | Jan. 25, 2024 USD ($) | Apr. 09, 2021 USD ($) | Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Dec. 31, 2024 USD ($) | Nov. 30, 2024 | Apr. 09, 2024 USD ($) | Jun. 30, 2020
Long-Term Debt |  |  |  | $ 18,184,000 |  | $ 18,184,000 |  |  |  |  |
Amortization of Debt Issuance Costs |  |  |  | 24,000 | $ 19,000 | 103,000 | $ 77,000 |  |  |  |
Debt Issuance Costs, Net |  |  |  | 128,000 |  | 128,000 |  | $ 231,000 |  |  |
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) [Member] | Secured Overnight Financing Rate (SOFR) [Member] | Secured Overnight Financing Rate (SOFR) [Member] |  |  |  |  |  |  |  |
The Credit Agreement [Member] | Fifth Third Bank, N.A. [Member] |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  | $ 22,000,000 |  |  |  |  |  |  |  |
Number of Debt Instruments |  |  | 3 |  |  |  |  |  |  |  |
Debt Instrument, Covenant, Minimum Fixed Charge Coverage Ratio |  |  | 1.25 |  |  |  |  |  |  |  |
Debt Instrument, Covenant, Maximum Funded Debt to EDITDA Ratio |  |  | 3 |  |  |  |  |  |  |  |
Debt Instrument, Covenant, Minimum Unrestricted Cash |  |  |  |  |  |  |  |  |  | $ 5,000,000 |
The Credit Agreement, First Loan and Second Loan Facility [Member] | Fifth Third Bank, N.A. [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  | $ 9,500,000 |  |  |  |  |  |  |  |
Long-Term Debt |  |  |  | 16,933,000 |  | 16,933,000 |  | 18,462,000 |  |  |
Debt Issuance Costs, Gross |  |  |  | 0 |  | 0 |  | 97,000 |  |  |
The Credit Agreement, Second Loan Facility [Member] | Fifth Third Bank, N.A. [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  | 5,500,000 |  |  |  |  |  |  |  |
The Credit Agreement, Third Loan Facility [Member] | Fifth Third Bank, N.A. [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  | $ 7,000,000 |  |  |  |  |  |  |  |
Long-Term Line of Credit |  |  |  | $ 2,000,000 |  | $ 2,000,000 |  |  |  |  |
Debt Instrument, Term (Year) |  |  | 5 years |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  | 3.00% |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage |  |  |  | 7.36% |  | 7.36% |  |  |  |  |
The Credit Agreement, 2024 Supplemental Term Loan [Member] | Fifth Third Bank, N.A. [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount | $ 7,000,000 | $ 2,700,000 |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 3.00% | 3.00% |  |  |  |  |  |  |  |  |
Debt Instrument, Variable Rate, Floor | 0.00% | 0.00% |  |  |  |  |  |  |  |  |
DFC Loan, Tranche One [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Number of Installments |  |  |  |  |  |  |  |  |  |  | 29
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  |  |  | 3.67%
DFC Loan, Tranche Two [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Number of Installments |  |  |  |  |  |  |  |  |  |  | 16
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  |  |  | 7.49%
DFC Loan [Member] |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt |  |  |  | $ 1,313,000 |  | $ 1,313,000 |  | $ 1,806,000 |  |  |
GKCE Loan One [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  | 12.60% |  |
Debt Instrument, Number of Monthly Installment |  |  |  |  |  |  |  |  | 12 |  |
GKCE Loan Two [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  | 12.78% |  |  |
Debt Instrument, Number of Monthly Installment |  |  |  |  |  |  |  | 36 |  |  |
GKCE Loans [Member] |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt |  |  |  | 66,000 |  | 66,000 |  | $ 145,000 |  |  |
Debt Issuance Costs, Gross |  |  |  | $ 0 |  | $ 0 |  |  |  |  |

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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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