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Note 10 - Long-term Debt (Tables) | 12 Months Ended
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Dec. 31, 2018
Notes Tables |
Schedule of Debt [Table Text Block] |
|  | December 31, 2018 |  |  | December 31, 2017 |
Revolving Credit Facility |  | $ | 430,167 |  |  | $ | 246,411 |
Senior Notes |  |  | 239,577 |  |  |  | - |
Capital leases maturing at various dates through 2021 |  |  | 1,470 |  |  |  | 1,991 |
Other long-term debt maturing at various dates up to 2021 |  |  | 910 |  |  |  | 1,491 |
|  |  | 672,123 |  |  |  | 249,893 |
Less: current portion |  |  | 1,834 |  |  |  | 2,426 |
Long-term debt - non-current |  | $ | 670,289 |  |  | $ | 247,467 |
Schedule of Maturities of Long-term Debt [Table Text Block] |
| 2019 |  | $ | 1,834 |  |
| 2020 |  |  | 348 |  |
| 2021 |  |  | 198 |  |
| 2022 |  |  | - |  |
| 2023 and thereafter |  |  | 669,743 |  |

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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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