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Note 11 - Income Taxes (Details Narrative) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Note 11 - Income Taxes Details Narrative    
Increase in valuation allowance for deferred tax assets $ 6,642 $ 659
Increase in valuation allowance due to settlement of uncertain tax position 7,296  
Decrease in valuation allowance excluding effect of settlement of uncertain tax position (654)  
Net operating loss carryforward 86,800 65,900
Net operating loss carryforward - domestic 74,400 53,500
Net operating loss carryforward - foreign 12,400 12,400
Tax credit carryforwards 1,600 1,400
Net operating loss carryforward for which a benefit will be recorded in capital when realized 3,000 2,900
Impairment of trademark 150 $ 0
Tax benefit associated with impairment of trademark (51)  
Increase in net operating loss carryforward due to settlement of uncertain tax position $ 21,400