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Share Capital, Option Plans and Share-Based Payments (Summary of Outstanding Stock Options Activity) (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Options    
Options outstanding beginning balance (in shares) 4,375,365 4,273,226
Options granted (in shares) 737,640 1,368,410
Options exercised (in shares) (468,295) (476,103)
Options forfeited or expired (in shares) (467,302) (790,168)
Options outstanding ending balance (in shares) 4,177,408 4,375,365
Options exercisable ending balance (in shares) 1,607,188 1,309,484
Weighted- Average Exercise Price    
Options outstanding beginning balance, weighted-average exercise price (in dollars per share) $ 42.26 $ 36.35
Options granted, weighted average exercise price (in dollars per share) 48.17 54.33
Options exercised, weighted-average exercise price (in dollars per share) 31.13 25.54
Options forfeited or expired, weighted-average exercise price (in dollars per share) 48.33 41.25
Options outstanding ending balance, weighted-average exercise price (in dollars per share) 43.87 42.26
Options exercisable, weighted average exercise price (in dollars per share) $ 36.03 $ 32.32
Weighted Average Remaining Contractual Life (years) 4 years 6 months 23 days 4 years 11 months 16 days
Options exercisable, weighted-average remaining contractual term (in years) 3 years 4 months 29 days 3 years 5 months 23 days
Options outstanding, aggregate intrinsic value $ 63,862 $ 22,153
Options exercisable, aggregate intrinsic value $ 37,167 $ 13,635