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Capital Assets (Components Of Capital Assets By Type) (Details) (USD $)
Sep. 30, 2011
Jun. 30, 2011
Property, Plant and Equipment [Line Items]  
Cost$ 140,247,000[1]$ 127,395,000[1]
Accumulated Depreciation55,657,00049,570,000[1]
Net Capital Assets84,590,00077,825,000
Furniture And Fixtures [Member]
  
Property, Plant and Equipment [Line Items]  
Cost9,856,000[1]7,421,000[1]
Accumulated Depreciation2,888,0002,667,000[1]
Net Capital Assets6,968,0004,754,000
Office Equipment [Member]
  
Property, Plant and Equipment [Line Items]  
Cost1,094,000[1]1,214,000[1]
Accumulated Depreciation684,000657,000[1]
Net Capital Assets410,000557,000
Computer Hardware [Member]
  
Property, Plant and Equipment [Line Items]  
Cost49,640,000[1]43,961,000[1]
Accumulated Depreciation33,700,00030,191,000[1]
Net Capital Assets15,940,00013,770,000
Computer Software [Member]
  
Property, Plant and Equipment [Line Items]  
Cost10,507,000[1]9,668,000[1]
Accumulated Depreciation4,999,0003,858,000[1]
Net Capital Assets5,508,0005,810,000
Leasehold Improvements [Member]
  
Property, Plant and Equipment [Line Items]  
Cost27,122,000[1]26,483,000[1]
Accumulated Depreciation10,636,0009,599,000[1]
Net Capital Assets16,486,00016,884,000
Buildings [Member]
  
Property, Plant and Equipment [Line Items]  
Cost42,028,000[1],[2]38,648,000[1],[2]
Accumulated Depreciation2,750,000[2]2,598,000[1],[2]
Net Capital Assets39,278,000[2]36,050,000[2]
New Building [Member]
  
Property, Plant and Equipment [Line Items]  
Accumulated Depreciation50,000 
Amount of assets under construction in progress$ 24,000,000$ 20,600,000
[1]Excludes the original cost and accumulated depreciation of fully-depreciated assets, and assets that are no longer in use.
[2]As of September 30, 2011, the construction of our new building in Waterloo, Ontario, Canada was completed and was put into use at the beginning of September, 2011. The total cost of this building was $24.0 million and $0.05 million of related accumulated depreciation was recorded during the quarter. (As of June 30, 2011—$20.6 million for the new building was included in the cost).