Note 12 - Income Taxes (Details) - Reconciliation of Income Tax Computed at the U.S. Federal Statutory Rate (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reconciliation of Income Tax Computed at the U.S. Federal Statutory Rate [Abstract]
Expected tax expense (benefit)	$ 5,225	$ (5,450)	$ (8,024)
Increase (decrease) in income taxes resulting from:
State income taxes, net of federal benefit	712	(694)	(770)
Non-deductible items	896	240	274
Foreign tax rates	(2,587)	433	551
Other	189	115	(18)
Income tax expense (benefit)	$ 4,435us-gaap_IncomeTaxExpenseBenefit	$ (5,356)us-gaap_IncomeTaxExpenseBenefit	$ (7,987)us-gaap_IncomeTaxExpenseBenefit

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- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(h))

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph h

-Article 4

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Income Tax Expense (or Benefit)

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 9

-Subparagraph (a),(b)

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign income tax expense (benefit).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 12

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-Name Regulation S-X (SX)

-Number 210

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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