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Note 7 - Loan Payable (Details Textual) $ in Thousands |  | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jun. 14, 2019 USD ($) | Mar. 31, 2022 USD ($) | Mar. 31, 2021 USD ($) | Dec. 31, 2019 USD ($) | Mar. 31, 2023 | Oct. 26, 2021 USD ($)
Payments of Financing Costs, Total |  | $ 177 | $ (0) |  |  |
Royal Bank, Bank of Montreal, Bank of Nova Scotia, HSBC and CIBC [Member] |  |  |  |  |  |
Debt Issuance Costs, Gross |  |  |  | $ 400 |  |
Debt Instrument, Term (Year) | 4 years |  |  |  |  |
Maximum Total Funded Debt to EBITDA Ratio |  |  |  |  |  | 4.50
Minimum Fixed Charge Coverage Ratio |  |  |  |  |  | 3.00
Royal Bank, Bank of Montreal, Bank of Nova Scotia, HSBC and CIBC [Member] | Forecast [Member] |  |  |  |  |  |
Maximum Total Funded Debt to EBITDA Ratio |  |  |  |  | 4.00 |
Royal Bank, Bank of Montreal, Bank of Nova Scotia, HSBC and CIBC [Member] | General and Administrative Expense [Member] |  |  |  |  |  |
Payments of Financing Costs, Total |  |  |  | 100 |  |
Royal Bank, Bank of Montreal, Bank of Nova Scotia, HSBC and CIBC [Member] | Guaranteed Credit Facility [Member] |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 240,000 |  |  |  |  | $ 180,000
Royal Bank, Bank of Montreal, Bank of Nova Scotia, HSBC and CIBC [Member] | Accordion Facility [Member] |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 60,000 |  |  |  |  |
Fees to Lenders |  |  |  | 300 |  |
Legal Fees |  |  |  | $ 200 |  |

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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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