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Property and Equipment (Components Of Property and Equipment By Type) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Jun. 30, 2012
Property, Plant and Equipment [Line Items]    
Cost $ 157,058 $ 145,872
Accumulated Depreciation 73,923 64,715
Net Property and Equipment 83,135 81,157
Furniture and fixtures [Member]
    
Property, Plant and Equipment [Line Items]    
Cost 11,500 10,828
Accumulated Depreciation 5,935 4,577
Net Property and Equipment 5,565 6,251
Office equipment [Member]
    
Property, Plant and Equipment [Line Items]    
Cost 1,117 975
Accumulated Depreciation 699 596
Net Property and Equipment 418 379
Computer hardware [Member]
    
Property, Plant and Equipment [Line Items]    
Cost 55,094 48,834
Accumulated Depreciation 37,858 34,799
Net Property and Equipment 17,236 14,035
Computer software [Member]
    
Property, Plant and Equipment [Line Items]    
Cost 16,008 13,558
Accumulated Depreciation 9,118 7,404
Net Property and Equipment 6,890 6,154
Leasehold improvements [Member]
    
Property, Plant and Equipment [Line Items]    
Cost 29,312 27,643
Accumulated Depreciation 16,202 13,777
Net Property and Equipment 13,110 13,866
Buildings [Member]
    
Property, Plant and Equipment [Line Items]    
Cost 44,027 44,034
Accumulated Depreciation 4,111 3,562
Net Property and Equipment $ 39,916 $ 40,472