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Note 15 - Share-based Compensation (Details) - Summary of Information Concerning Stock Options Outstanding Including the Related Transactions under the Stock Option Plans
$ / shares in Units, shares in Thousands, $ in Thousands
 9 Months Ended
Sep. 30, 2015
USD ($)
$ / shares
shares
Summary of Information Concerning Stock Options Outstanding Including the Related Transactions under the Stock Option Plans [Abstract]  
Options Outstanding as of December 31, 2014 48,724
Options Outstanding as of December 31, 2014 | $ / shares $ 18.94
Granted 1,578
Granted | $ / shares $ 21.48
Exercised (6,080)
Exercised | $ / shares $ 16.31
Forfeited and Expired (247)
Forfeited and Expired | $ / shares $ 18.83
Options Outstanding as of September 30, 2015 43,975
Options Outstanding as of September 30, 2015 | $ / shares $ 19.40
Options Outstanding as of September 30, 2015 4 years 36 days
Options Outstanding as of September 30, 2015 | $ $ 67,066
Options Expected to Vest as of September 30, 2015 43,923
Options Expected to Vest as of September 30, 2015 | $ / shares $ 19.40
Options Expected to Vest as of September 30, 2015 4 years 32 days
Options Expected to Vest as of September 30, 2015 | $ $ 67,027
Options Exercisable as of September 30, 2015 36,470
Options Exercisable as of September 30, 2015 | $ / shares $ 19.84
Options Exercisable as of September 30, 2015 3 years 94 days
Options Exercisable as of September 30, 2015 | $ $ 54,856