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Note 19 - Stock-based Compensation (Details) - Share-based Payment Award, Stock Options, Valuation Assumptions - $ / shares
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Share-based Payment Award, Stock Options, Valuation Assumptions [Abstract]    
Weighted-average fair value of options granted (in Dollars per share) $ 5.94 $ 7.44
Weighted-average risk-free interest rate 1.46% 1.46%
Range of risk-free interest rates 1.26% 1.39%
Range of risk-free interest rates 1.60% 1.51%
Weighted-average expected option lives (years) 4 years 6 months 4 years 6 months
Expected option lives (years) 4 years 6 months 4 years 6 months
Weighted-average volatility 46.00% 39.00%
Range of expected volatilities 40.00% 36.00%
Range of expected volatilities 49.00% 42.00%
Weighted-average expected dividend yield 0.00% 0.00%