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Note 3 - Acquisitions (Details Textual) $ in Thousands |  |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Mar. 01, 2016 USD ($) | Aug. 01, 2015 USD ($) | Oct. 01, 2014 USD ($) | Dec. 31, 2015 USD ($) | Sep. 30, 2015 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($)
Payments to Acquire Businesses, Net of Cash Acquired |  |  |  |  |  | $ 61,386 | $ 73,782 | $ 61,196
Number of Countries Where Product is Sold by Subsidiary |  |  |  |  |  | 150 |  |
Goodwill |  |  |  | $ 669,719 |  | $ 704,640 | $ 669,719 | $ 635,565
Pramac [Member] |  |  |  |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired | 65.00% |  |  |  |  |  |  |
Payments to Acquire Businesses, Net of Cash Acquired | $ 60,886 |  |  |  |  |  |  |
Number of Countries Where Product is Sold by Subsidiary | 150 |  |  |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners | 35.00% |  |  |  |  |  |  |
Redeemable Noncontrolling Interest, Equity, Fair Value | $ 34,253 |  |  |  |  |  |  |
Noncontrolling Interest, Term of Put Option | 5 years |  |  |  |  |  |  |
Noncontrolling Interest, Term of Put Option in which Option Price is Fixed | 2 years |  |  |  |  |  |  |
Goodwill | $ 46,202 |  |  |  |  |  |  |
CHP [Member] |  |  |  |  |  |  |  |
Payments to Acquire Businesses, Net of Cash Acquired |  | $ 74,570 |  |  |  |  |  |
Business Acquisition, Purchase Price Allocation, Intangible Assets Including Goodwill |  | 81,726 |  |  |  |  |  |
Goodwill |  | 30,076 |  |  |  |  |  |
Increase (Decrease) in Intangible Assets, Non-current |  |  |  | (6,552) |  |  |  |
Goodwill, Period Increase (Decrease) |  |  |  | $ 6,208 |  |  |  |
Noncash or Part Noncash Acquisition, Debt Assumed |  | $ 12,000 |  |  |  |  |  |
MAC Inc. [Member] |  |  |  |  |  |  |  |
Payments to Acquire Businesses, Net of Cash Acquired |  |  | $ 53,747 |  |  |  |  |
Business Acquisition, Purchase Price Allocation, Intangible Assets Including Goodwill |  |  | 49,378 |  |  |  |  |
Goodwill |  |  | $ 25,898 |  |  |  |  |
Increase (Decrease) in Intangible Assets, Non-current |  |  |  |  | $ (4,229) |  |  |
Goodwill, Period Increase (Decrease) |  |  |  |  | $ 2,481 |  |  |

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