Note 11 - Income Taxes - Activity Related to the Entity's Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Beginning Balance	$ 1,492	$ 1,643	$ 3,922
Gross increases related to current period tax positions	687	281	275
Gross decreases related to prior period tax positions	(84)	(52)	(1,149)
Expirations of statute of limitations for the assessment of taxes	(257)	(241)	(106)
Settlements			(1,113)
Foreign currency translation	(60)	(139)	(186)
Ending Balance	$ 1,778	$ 1,492	$ 1,643

Amount of net impact of increase decrease in unrecognized tax benefits resulting from foreign currency translation.

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- Definition

Amount of unrecognized tax benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15A
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=65882285&loc=SL6600010-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Unrecognized Tax Benefit
-URI http://asc.fasb.org/extlink&oid=6527854

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

+ References

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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