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Note 1 - Basis of Presentation (Tables) | 9 Months Ended
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Sep. 30, 2016
Notes Tables |
Schedule of Weighted Average Number of Shares [Table Text Block] |
|  | Three Months Ended |  |  | Nine Months Ended |
|  | September 30, |  |  | September 30, |
|  | 2016 |  |  | 2015 |  |  | 2016 |  |  | 2015 |
Weighted-average shares outstanding-basic |  |  | 71,879 |  |  |  | 71,638 |  |  |  | 71,850 |  |  |  | 67,215 |
Common stock equivalents for stock options and restricted stock |  |  | - |  |  |  | 703 |  |  |  | 873 |  |  |  | 609 |
Weighted-average shares outstanding-diluted |  |  | 71,879 |  |  |  | 72,341 |  |  |  | 72,723 |  |  |  | 67,824 |
Property, Plant and Equipment [Table Text Block] |
|  |  |  |  |  |  |  |  |  | Estimated |
|  | September 30, |  |  | December 31, |  |  | Useful Lives |
|  | 2016 |  |  | 2015 |  |  | (in years) |
Property and equipment: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Land |  | $ | 45,306 |  |  | $ | 36,529 |  |  |  |  |  |  |
Buildings and improvements |  |  | 135,208 |  |  |  | 85,626 |  |  |  | 7 | to | 40 |
Equipment |  |  | 468,692 |  |  |  | 420,380 |  |  |  | 3 | to | 20 |
|  |  | 649,206 |  |  |  | 542,535 |  |  |  |  |  |  |
Accumulated depreciation |  |  | (320,577 | ) |  |  | (308,060 | ) |  |  |  |  |  |
Total property and equipment, net |  | $ | 328,629 |  |  | $ | 234,475 |  |  |  |  |  |  |

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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