Note 16 - Income Tax (Details) - Deferred Income Tax Components (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Deferred income tax assets
Loss carry-forwards	$ 79,932	$ 91,957
Expenses not currently deductible	33,240	23,467
Stock-based compensation	4,797	3,956
Basis differences of partnerships and other entities	17,442	14,173
Allowance for doubtful accounts	4,405	4,580
Inventory and other reserves	4,006	2,554
	143,822us-gaap_DeferredTaxAssetsGross	140,687us-gaap_DeferredTaxAssetsGross
	129,262us-gaap_DeferredTaxAssetsNet	126,567us-gaap_DeferredTaxAssetsNet
Deferred income tax liabilities
Depreciation and amortization	36,205	31,165
Prepaid and other expenses deducted for tax purposes	1,804	1,427
	38,009us-gaap_DeferredIncomeTaxLiabilities	32,592us-gaap_DeferredIncomeTaxLiabilities
Net deferred income tax asset	91,253us-gaap_DeferredTaxAssetsLiabilitiesNet	93,975us-gaap_DeferredTaxAssetsLiabilitiesNet
Deferred Income Taxes [Member]
Deferred income tax assets
Less: valuation allowance	$ (14,560)	$ (14,120)

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