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Note 8 - Loan Payable (Tables) | 12 Months Ended
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Dec. 31, 2018
Notes Tables |
Schedule of Standby Fees Based on Total Funded Debt to EBITDA Ratio [Table Text Block] |
|  | If Total Funded Debt to EBITDA is: |
Availment type or fee |  | Less than 1.00 |  |  | Greater than or equal to 1.00 and less than 2.00 |  |  | Greater than or equal to 2.00 and less than 2.25 |  |  | Greater than or equal to 2.25 |
Canadian dollar borrowings based on Bankers’ Acceptance or U.S. dollar borrowings based on LIBOR (Margin) |  |  | 2.00 | % |  |  | 2.25 | % |  |  | 2.75 | % |  |  | 3.25 | %
Canadian or U.S. dollar borrowings based on Prime Rate or U.S. dollar borrowings based on Base Rate (Margin) |  |  | 0.75 | % |  |  | 1.00 | % |  |  | 1.50 | % |  |  | 2.00 | %
Standby fees |  |  | 0.40 | % |  |  | 0.45 | % |  |  | 0.55 | % |  |  | 0.65 | %
Schedule of Debt [Table Text Block] |
|  | December 31, 2018 |  |  | December 31, 2017 |
Facility A |  |  | 1,000 |  |  |  | - |
Facility B |  |  | 6,000 |  |  |  | - |
Facility C |  |  | 3,232 |  |  |  | 5,930 |
Facility D |  |  | 54,924 |  |  |  | 71,823 |
Less: unamortized debt discount and issuance costs |  |  | (555 | ) |  |  | (829 | )
Total loan payable |  |  | 64,601 |  |  |  | 76,924 |
Less: loan payable, current portion |  |  | 18,400 |  |  |  | 18,290 |
Loan payable, long-term portion |  |  | 46,201 |  |  |  | 58,634 |
Schedule of Maturities of Long-term Debt [Table Text Block] |
2019 |  |  | 18,400 |
2020 |  |  | 18,400 |
2021 |  |  | 28,356 |
|  | $ | 65,156 |

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- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. + References No definition available. + Details
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- Definition Tabular disclosure of the combined aggregate amount of maturities and sinking fund requirements for all long-term borrowings for each of the five years following the date of the latest balance sheet date presented. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
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