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Share Capital, Option Plans And Share-Based Payments (Tables)
 3 Months Ended
Sep. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Summary Of Share-based Compensation Costs
Total share-based compensation expense for the periods indicated below is detailed as follows: 
 
 
Three Months Ended September 30,
 
 
2015
 
2014
Stock options
 
$
3,664

 
$
2,569

Performance Share Units (issued under LTIP)
 
620

 
591

Restricted Share Units (issued under LTIP)
 
1,234

 
743

Restricted Share Units (other)
 
381

 
75

Deferred Share Units (directors)
 
634

 
471

Total share-based compensation expense
 
$
6,533

 
$
4,449
Summary Of Option Activity
A summary of activity under our stock option plans for three months ended September 30, 2015 is as follows:
 
Options
 
Weighted-
Average Exercise
Price
 
Weighted-
Average
Remaining
Contractual Term
(years)
 
Aggregate Intrinsic  Value
($’000s)
Outstanding at June 30, 2015
4,375,365

 
$
42.26

 
 
 
 
Granted
348,460

 
45.73

 
 
 
 
Exercised
(145,700
)
 
29.27

 
 
 
 
Forfeited or expired
(140,435
)
 
46.59

 
 
 
 
Outstanding at September 30, 2015
4,437,690

 
$
42.82

 
4.99
 
$
27,343

Exercisable at September 30, 2015
1,308,414

 
$
33.81

 
3.71
 
$
16,793
Schedule Of Weighted-Average Fair Value Of Options And Weighted-Average Assumptions Used
For the periods indicated, the weighted-average fair value of options and weighted-average assumptions were as follows:
 
Three Months Ended September 30,
 
 
2015
 
2014
Weighted–average fair value of options granted
 
$
11.23

 
$
14.30

Weighted-average assumptions used:
 
 
 
 
Expected volatility
 
33
%
 
32
%
Risk–free interest rate
 
1.48
%
 
1.51
%
Expected dividend yield
 
1.63
%
 
1.15
%
Expected life (in years)
 
4.33

 
4.34

Forfeiture rate (based on historical rates)
 
5
%
 
5
%
Average exercise share price
 
$
45.73

 
$
56.33