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Income Taxes (Reconciliation Of Federal And Provincial Income Tax Rate With Effective Income Tax Rate) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2010
Income Tax Disclosure [Abstract]      
Expected statutory rate 27.25% 29.25% 32.50%
Expected provision for income taxes $ 37,427 $ 39,819 $ 29,623
Effect of foreign tax rate differences (21,496) (10,258) (8,275)
Change in valuation allowance 15,536 (4,840) 814
Amortization of deferred charges 11,112 8,535 0
Effect of permanent differences 6,902 1,577 (2,872)
Effect of Canadian US dollar functional currency election (5,887) 0 0
Withholding taxes and other items 1,473 (5,177) 3,847
Impact of internal reorganization of subsidiaries and integration of acquisitions (32,896) (16,725) (21,202)
Provision for income taxes $ 12,171 $ 12,931 $ 1,935