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Note 10 - Share-based Compensation (Details) - Jun. 30, 2015 - $ / shares
Total
Outstanding October 1, 2014 (in shares) 2,530,535
Outstanding October 1, 2014 (in dollars per share) $ 2.09
Granted (in shares) 664,500
Granted (in dollars per share) $ 2.77
Forfeited/expired (in shares) (51,833)
Forfeited/expired (in dollars per share) $ 2.58
Exercised (in shares) (394,167)
Exercised (in dollars per share) $ 1.26
Outstanding June 30, 2015 (in shares) 2,749,035
Outstanding June 30, 2015 (in dollars per share) $ 2.36
Exercisable June 30, 2015 (in shares) 2,208,448
Exercisable June 30, 2015 (in dollars per share) $ 2.36