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Share Capital, Option Plans And Share-Based Payments (Summary Of Option Activity) (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 6 Months Ended
Dec. 31, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Options outstanding beginning balance (in shares) 2,147,151
Options granted (in shares) 252,545
Options exercised (in shares) (190,000)
Options forfeited or expired (in shares) (120,750)
Options outstanding ending balance (in shares) 2,088,946
Options exercisable (in shares) 898,276
Options outstanding beginning balance, weighted-average exercise price (in dollars per share) $ 40.07
Options granted, weighted-average exercise price (in dollars per share) $ 53.20
Options exercised, weighted-average exercise price (in dollars per share) $ 28.12
Options forfeited or expired, weighted-average exercise price (in dollars per share) $ 45.70
Options outstanding ending balance, weighted-average exercise price (in dollars per share) $ 42.42
Options exercisable, weighted-average exercise price (in dollars per share) $ 27.32
Options outstanding, weighted-average remaining contractual term 4 years 4 months 28 days
Options exercisable, weighted-average remaining contractual term 2 years 1 month 10 days
Options outstanding, aggregate intrinsic value $ 30,040
Options exercisable, aggregate intrinsic value $ 25,674