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Note 8 - Syndicated Revolver (Details Textual) $ in Millions |  | 9 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 22, 2023 USD ($) | Sep. 21, 2023 USD ($) | Dec. 31, 2023 USD ($) | Jun. 30, 2024 | Mar. 31, 2024 | Jun. 14, 2019 USD ($)
Debt Instrument, Required Principal Payment | $ 211.9 |  |  |  |  |
Royal Bank, Bank of Montreal, Bank of Nova Scotia, HSBC and CIBC [Member] | Guaranteed Credit Facility [Member] |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  | $ 240.0
Repayments of Debt |  | $ 16.3 | $ 17.8 |  |  |
Debt Instrument, Face Amount |  |  | 50.9 |  |  |
Royal Bank, Bank of Montreal, Bank of Nova Scotia, HSBC and CIBC [Member] | Guaranteed Credit Facility [Member] | Interest Expense, Net [Member] |  |  |  |  |  |
Amortization of Debt Issuance Costs |  |  | 0.1 |  |  |
Bank of Montreal [Member] | The 2023 Credit Facility [Member] |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 240.0 |  |  |  |  |
Repayments of Debt |  |  | 10.0 |  |  |
Line of Credit Facility, Increasing Capacity, Total Funded Debt to Adjusted EBITDA Ratio Benchmark | 3.75 |  |  |  |  |
Debt Instrument, Fee Amount | $ 0.9 |  |  |  |  |
Legal Fees | $ 0.3 |  |  |  |  |
Debt Instrument, Face Amount |  |  | $ 50.9 |  |  |
Maximum Total Funded Debt to EBITDA Ratio | 4.5 |  | 4.25 |  |  |
Minimum Fixed Charge Coverage Ratio | 3 |  |  |  |  |
Bank of Montreal [Member] | The 2023 Credit Facility [Member] | Forecast [Member] |  |  |  |  |  |
Maximum Total Funded Debt to EBITDA Ratio |  |  |  | 3.75 | 4 |
Bank of Montreal [Member] | The 2023 Credit Facility [Member] | Maximum [Member] |  |  |  |  |  |
Line of Credit Facility, Additional Borrowing Capacity Available Through New Commitment | $ 60.0 |  |  |  |  |

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