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Note 13 - Shareholders Equity (Details) - Stock Option Fair Value Measurement Assumptions
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Stock Option Fair Value Measurement Assumptions [Abstract]      
Expected life of option (years) 7 years 5 years 219 days 6 years 36 days
Risk-free interest rate 1.36% 0.82% 2.36%
Expected volatility 92.00% 59.00% 56.35%
Dividend yield 0.00% 0.00% 0.00%