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Note 19 - Stock-based Compensation (Details) - Stock Option Activity
12 Months Ended
Dec. 31, 2015
$ / shares
shares
Stock Option Activity [Abstract]  
Shares Under Option, Outstanding | shares 781,321
Weighted Average Exercise Price Per Share, Outstanding | $ / shares $ 22.56
Weighted Average Remaining Contractual Life, Outstanding 6 years 62 days
Exercisable on December 31, 2015 | shares 273,205
Exercisable on December 31, 2015 | $ / shares $ 22.61
Exercisable on December 31, 2015 5 years 266 days
Expected to vest December 31, 2015 | shares 1,247,590
Expected to vest December 31, 2015 | $ / shares $ 18.08
Expected to vest December 31, 2015 6 years 98 days
Granted | shares 783,476
Granted | $ / shares $ 15.31
Forfeited | shares (44,002)
Forfeited | $ / shares $ 20.25
Shares Under Option, Outstanding | shares 1,520,795
Weighted Average Exercise Price Per Share, Outstanding | $ / shares $ 18.89