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Note 13 - Shareholders Equity (Details) - Impact on Results for Stock-based Compensation (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Share-based compensation $ 201 $ 200 $ 426
Cost of Sales [Member]
     
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Share-based compensation 5    
Research and Development Expense [Member]
     
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Share-based compensation 28 27 37
Selling and Marketing Expense [Member]
     
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Share-based compensation 32 27 141
General and Administrative Expense [Member]
     
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Share-based compensation $ 136 $ 146 $ 248