Note 18 - Income Taxes (Details) - Balance Sheet Presentation of Deferred Taxes (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Balance Sheet Presentation of Deferred Taxes [Abstract]
Current deferred tax assets	$ 251	$ 523	$ 637
Current deferred tax liabilities	(974)us-gaap_DeferredTaxLiabilitiesCurrent		(20,392)us-gaap_DeferredTaxLiabilitiesCurrent
Non-current deferred tax assets		891	21,283
Non-current deferred tax liabilities	(66,220)	(55,035)	(45,059)
	$ (66,943)us-gaap_DeferredTaxAssetsLiabilitiesNet	$ (53,621)us-gaap_DeferredTaxAssetsLiabilitiesNet	$ (43,531)us-gaap_DeferredTaxAssetsLiabilitiesNet

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