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Note 7 - Loan Payable (Details Textual) - Royal Bank, Bank of Montreal, Bank of Nova Scotia, HSBC and CIBC [Member] $ in Millions | Jun. 14, 2019 USD ($) | Sep. 30, 2020
--- | --- | ---
Line of Credit Facility, Maximum Borrowing Capacity | $ 240.0 |
Debt Issuance Costs, Gross | $ 0.4 |
Debt Instrument, Term (Year) | 4 years |
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
General and Administrative Expense [Member] |  |
Payments of Financing Costs, Total | $ 0.1 |
Guaranteed Credit Facility [Member] |  |
Line of Credit Facility, Maximum Borrowing Capacity | 180.0 |
Accordion Facility [Member] |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 60.0 |

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- 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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- Definition The minimum fixed charge coverage ratio. + 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 Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28555-108399 + 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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- Definition The cash outflow for loan and debt issuance costs. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585 + Details
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