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Note 8 - Long-term Debt (Tables) | 12 Months Ended
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Dec. 31, 2016
Notes Tables |
Schedule of Debt [Table Text Block] |
|  | December 31, 2016
Revolving credit facility |  | $ | 96,688 |
3.84% Notes |  |  | 150,000 |
Capital leases maturing at various dates through 2021 |  |  | 1,188 |
Other long-term debt maturing at various dates up to 2023 |  |  | 3,033 |
|  |  | 250,909 |
Less: current portion |  |  | 1,043 |
Long-term debt - non-current |  | $ | 249,866 |
Schedule of Maturities of Long-term Debt [Table Text Block] |
2017 |  | $ | 1,043 |
2018 |  |  | 795 |
2019 |  |  | 547 |
2020 |  |  | 97,237 |
2021 and thereafter |  |  | 151,287 |

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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://www.xbrl.org/2003/role/presentationRef -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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