Share Capital, Option Plans And Share-Based Payments (Summary Of Share-Based Compensation Costs) (Details) (USD $) In Thousands	12 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2009
Share-based compensation expense	$ 11,308	$ 9,765	$ 5,032
Stock Options [Member]
Share-based compensation expense	3,546	7,293	5,032
Restricted Stock Awards [Member]
Share-based compensation expense	124	869
Deferred Stock Units [Member]
Share-based compensation expense	295	127
Performance Stock Units [Member]
Share-based compensation expense	$ 7,343	$ 1,476

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 28
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585

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