Note 2 - Acquisitions (Details Textual) $ in Thousands		3 Months Ended
Mar. 01, 2016 USD ($)	Mar. 31, 2017 USD ($)	Mar. 31, 2016 USD ($)
Payments to Acquire Businesses, Net of Cash Acquired		$ (1,610)	$ 61,280
Number of Countries Where Product is Sold by Subsidiary		150
Business Acquisition, Pro Forma Revenue			$ 315,881
Pramac [Member]
Business Acquisition, Percentage of Voting Interests Acquired	65.00%
Payments to Acquire Businesses, Net of Cash Acquired	$ 60,250
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

The term of a put option available to the noncontrolling interest of a business acquired by the reporting entity.

No definition available.

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- Definition

The term in which the price a put option available to the noncontrolling interest of a business acquired by the reporting entity is fixed.

+ References

No definition available.

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- Definition

Represents the number of countries in where the subsidiary sells its products.

+ References

No definition available.

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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

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- Definition

The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(2)-(3)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

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- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

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- Definition

The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585

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- Definition

The aggregate fair value as of the reporting date of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 480
-SubTopic 10
-Section S99
-Paragraph 3A
-Subparagraph 14
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