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Note 7 - Loan Payable - Schedule of Standby Fees Based on Total Funded Debt to EBITDA Ratio (Details) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Debt to EBITDA is Less Than 1 [Member] |  |  |  |
Standby fees | 0.30% |  |  |
Debt to EBITDA is Greater Than or Equal to 1 and Less Than 2 [Member] |  |  |  |
Standby fees |  | 0.37% |  |
Debt to EBITDA is Greater Than or Equal to 2 and Less Than 2.50 [Member] |  |  |  |
Standby fees |  |  | 0.47% |
Debt to EBITDA is Greater Than or Equal to 2.50 [Member] |  |  |  |
Standby fees |  |  |  | 0.57%
Bank of Montreal and Royal Bank of Canada [Member] | London Interbank Offered Rate (LIBOR) [Member] | Debt to EBITDA is Less Than 1 [Member] |  |  |  |
Basis Spread on Variable Rate | 1.50% |  |  |
Bank of Montreal and Royal Bank of Canada [Member] | London Interbank Offered Rate (LIBOR) [Member] | Debt to EBITDA is Greater Than or Equal to 1 and Less Than 2 [Member] |  |  |  |
Basis Spread on Variable Rate |  | 1.85% |  |
Bank of Montreal and Royal Bank of Canada [Member] | London Interbank Offered Rate (LIBOR) [Member] | Debt to EBITDA is Greater Than or Equal to 2 and Less Than 2.50 [Member] |  |  |  |
Basis Spread on Variable Rate |  |  | 2.35% |
Bank of Montreal and Royal Bank of Canada [Member] | London Interbank Offered Rate (LIBOR) [Member] | Debt to EBITDA is Greater Than or Equal to 2.50 [Member] |  |  |  |
Basis Spread on Variable Rate |  |  |  | 2.85%
Bank of Montreal and Royal Bank of Canada [Member] | Base Rate [Member] | Debt to EBITDA is Less Than 1 [Member] |  |  |  |
Basis Spread on Variable Rate | 0.25% |  |  |
Bank of Montreal and Royal Bank of Canada [Member] | Base Rate [Member] | Debt to EBITDA is Greater Than or Equal to 1 and Less Than 2 [Member] |  |  |  |
Basis Spread on Variable Rate |  | 0.60% |  |
Bank of Montreal and Royal Bank of Canada [Member] | Base Rate [Member] | Debt to EBITDA is Greater Than or Equal to 2 and Less Than 2.50 [Member] |  |  |  |
Basis Spread on Variable Rate |  |  | 1.10% |
Bank of Montreal and Royal Bank of Canada [Member] | Base Rate [Member] | Debt to EBITDA is Greater Than or Equal to 2.50 [Member] |  |  |  |
Basis Spread on Variable Rate |  |  |  | 1.60%

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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility. + References No definition available. + Details
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