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Note 15 - Stockholders' Equity (Details) - Summary of Stockholders' Equity (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Note 15 - Stockholders' Equity (Details) - Summary of Stockholders' Equity [Line Items]
Stockholders’ equity			$ 251,545
Net loss	(5,379)	(159)	(8,178)	10,033
Accumulated other comprehensive loss			(1,803)
Common stock issued through initial public offering			38,018
Common stock issued to employees, net of shares withheld			(485)
Cost related to public offering	(3,358)		(3,358)
Exercise of stock options			701
Stockholders’ equity	283,120		283,120
Nonemployee [Member]
Note 15 - Stockholders' Equity (Details) - Summary of Stockholders' Equity [Line Items]
Nonemployee share-based compensation expense			728
Employee [Member]
Note 15 - Stockholders' Equity (Details) - Summary of Stockholders' Equity [Line Items]
Employee share-based compensation expense			$ 5,952

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This element represents the amount of recognized equity-based compensation during the period, that is, the amount recognized as expense in the income statement (or as asset if compensation is capitalized). Alternate captions include the words "stock-based compensation".

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Specific incremental costs directly attributable to a proposed or actual offering of securities which are deferred at the end of the reporting period.

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