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Share Capital, Option Plans And Share-Based Payments Share Capital, Option Plans And Share-Based Payments (Schedule of Long Term Incentive Plan Expense) (Details) (USD $)
3 Months Ended 9 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2013
Mar. 31, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Unvested stock awards compensation cost, weighted average recognition period 3 years 3 months 26 days      
Long Term Incentive Plan [Member]
       
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Allocated share-based compensation expense $ 1,845,000 $ 3,460,000 $ 4,882,000 $ 9,780,000
Expected share-based compensation expense     39,818,000  
Compensation cost recognized to date 26,600,000   26,600,000  
Compensation cost not yet recognized 13,200,000   13,200,000  
Unvested stock awards compensation cost, weighted average recognition period     2 years 1 month 10 days  
Performance Stock Units (PSUs) [Member] | Fiscal 2012 LTIP [Member]
       
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Allocated share-based compensation expense 0 2,147,000 579,000 7,427,000
Expected share-based compensation expense     17,314,000  
Performance Stock Units (PSUs) [Member] | Fiscal 2013 LTIP [Member]
       
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Allocated share-based compensation expense 272,000 585,000 870,000 1,625,000
Expected share-based compensation expense     4,646,000  
Performance Stock Units (PSUs) [Member] | Fiscal 2014 LTIP [Member]
       
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Allocated share-based compensation expense 787,000 728,000 2,184,000 728,000
Expected share-based compensation expense     8,500,000  
Performance Stock Units (PSUs) [Member] | Fiscal 2015 LTIP [Member]
       
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Allocated share-based compensation expense 277,000 0 363,000 0
Expected share-based compensation expense     3,132,000  
Restricted Stock Units (RSUs) [Member] | Fiscal 2015 LTIP [Member]
       
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Allocated share-based compensation expense 509,000 0 886,000 0
Expected share-based compensation expense     $ 6,226,000