Note 9 - Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2018	Dec. 31, 2017
Gross Value	$ 28,206
Accumulated Currency Translation Adjustment	(3,829)	$ (4,132)
Accumulated Amortization	(13,699)	(13,439)
Intangible assets, net	10,678	10,635
In Process Research and Development [Member]
Gross Value	4,406
Accumulated Currency Translation Adjustment	(916)	(1,015)
Intangible assets, net	3,490	3,391
Developed Technology Rights [Member]
Gross Value	17,100
Accumulated Currency Translation Adjustment	(2,358)	(2,550)
Accumulated Amortization	(7,970)	(7,723)
Intangible assets, net	$ 6,772	6,827
Useful life (Year)	15 years
Distribution Rights [Member]
Gross Value	$ 4,700
Accumulated Currency Translation Adjustment	(415)	(415)
Accumulated Amortization	(4,285)	(4,285)
Intangible assets, net
Useful life (Year)	5 years
Patents [Member]
Gross Value	$ 1,000
Accumulated Currency Translation Adjustment	(140)	(152)
Accumulated Amortization	(444)	(431)
Intangible assets, net	$ 416	417
Useful life (Year)	16 years
Elevess Trade Name [Member]
Gross Value	$ 1,000
Accumulated Currency Translation Adjustment
Accumulated Amortization	(1,000)	(1,000)
Intangible assets, net
Useful life (Year)	9 years

Represents the amount of the accumulated currency translation adjustment.

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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- Definition

Amount before accumulated amortization of intangible assets, excluding goodwill.

+ References

No definition available.

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- Definition

Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph ((a)(1),(b))
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274

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