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Note 7 - Loan Payable (Details Textual) $ in Millions | Jan. 20, 2017 | Mar. 31, 2021 | Jun. 14, 2019 USD ($)
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Royal Bank, Bank of Montreal, Bank of Nova Scotia, HSBC and CIBC [Member] |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  | $ 240
Maximum Total Funded Debt to EBITDA Ratio |  | 3.50 |
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] | Guaranteed Credit Facility [Member] |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  | 180
Royal Bank, Bank of Montreal, Bank of Nova Scotia, HSBC and CIBC [Member] | Accordion Facility [Member] |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  | $ 60
Bank of Montreal and Royal Bank of Canada [Member] |  |  |
Debt Instrument, Term (Year) | 4 years |  |

X
- Definition Ratio of total funded debt to EDITDA that triggers obligation to repay 50% of excess cash flow as defined under the credit agreement. + References No definition available. + Details
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X
- Definition The minimum fixed charge coverage ratio. + References No definition available. + Details
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- Definition Represents the threshold for annual capital expenditures as a percentage of forecasted capital expenditure. + References No definition available. + Details
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- Definition Ratio of total funded debt to EDITDA. + References No definition available. + 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 Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Details
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- Details
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- Details
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- Details
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