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Note 7 - Loan Payable (Details Textual) $ in Thousands |  | 3 Months Ended
--- | --- | ---
Jun. 14, 2019 USD ($) | Mar. 31, 2020 USD ($) | Mar. 31, 2019 USD ($) | [1]
Payments of Financing Costs, Total |  | $ 25 | $ 205
Royal Bank, Bank of Montreal, Bank of Nova Scotia, HSBC and CIBC [Member] |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 240,000 |  |
Debt Issuance Costs, Gross | $ 400 |  |
Debt Instrument, Term (Year) | 4 years |  |
Maximum Total Funded Debt to EBITDA Ratio |  | 3.5 |
Minimum Fixed Charge Coverage Ratio |  | 3 |
Percentage of Forecasted Capital Expenditures, Threshold for Annual Capital Expenditures |  | 110.00% |
Total Funded Debt to EBITDA Ratio |  | 2 |
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 | 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 |  |
[1] | The Company has initially applied ASC 2014-09 (Topic 606) on January 1, 2018 and ASC 2016-02 (Topic 842) on January 1, 2019. Both accounting standards were adopted using the modified retrospective method, under this method the comparative periods were not restated.

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