Note 13 - Income Taxes (Details) - Deferred Tax Assets and Liabilities (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Deferred tax assets:
Allowance for doubtful accounts	$ 1,347	$ 572
Allowance for inventory reserves	12us-gaap_DeferredTaxAssetsInventory	15us-gaap_DeferredTaxAssetsInventory
Employee benefits	2,074	667
Deductible goodwill and other intangibles	45,858	6,977
Other reserves	4,329	3,384
Depreciation		683
Deferred revenue $1,152	4,491us-gaap_DeferredTaxAssetsDeferredIncome	5,251us-gaap_DeferredTaxAssetsDeferredIncome
Net operating loss $1,152	5,540
Other	2,466us-gaap_DeferredTaxAssetsOther	834us-gaap_DeferredTaxAssetsOther
Deferred tax asset	66,117us-gaap_DeferredTaxAssetsGross	18,383us-gaap_DeferredTaxAssetsGross
Valuation allowance	(49,523)
Deferred tax asset	16,594us-gaap_DeferredTaxAssetsLiabilitiesNet	18,383us-gaap_DeferredTaxAssetsLiabilitiesNet
Deferred tax liabilities:
Depreciation	(60,558)	(78,518)
Intangibles		(6,032)
Accrued liabilities		(3,161)
Investment	(26,044)
Other		(2,650)us-gaap_DeferredTaxLiabilitiesOther
Deferred tax liability	(86,602)us-gaap_DeferredIncomeTaxLiabilities	(90,361)us-gaap_DeferredIncomeTaxLiabilities
Net deferred tax liability	$ (70,008)us-gaap_DeferredTaxLiabilities	$ (71,978)us-gaap_DeferredTaxLiabilities

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