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Property and Equipment (Components Of Property and Equipment By Type) (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Jun. 30, 2012
Property, Plant and Equipment [Line Items]    
Cost $ 155,149 $ 145,872
Accumulated Depreciation 69,817 64,715
Net Property and Equipment 85,332 81,157
Furniture and fixtures [Member]
    
Property, Plant and Equipment [Line Items]    
Cost 11,071 10,828
Accumulated Depreciation 5,272 4,577
Net Property and Equipment 5,799 6,251
Office equipment [Member]
    
Property, Plant and Equipment [Line Items]    
Cost 1,071 975
Accumulated Depreciation 665 596
Net Property and Equipment 406 379
Computer hardware [Member]
    
Property, Plant and Equipment [Line Items]    
Cost 54,267 48,834
Accumulated Depreciation 36,772 34,799
Net Property and Equipment 17,495 14,035
Computer software [Member]
    
Property, Plant and Equipment [Line Items]    
Cost 15,409 13,558
Accumulated Depreciation 8,219 7,404
Net Property and Equipment 7,190 6,154
Leasehold improvements [Member]
    
Property, Plant and Equipment [Line Items]    
Cost 29,324 27,643
Accumulated Depreciation 15,053 13,777
Net Property and Equipment 14,271 13,866
Buildings [Member]
    
Property, Plant and Equipment [Line Items]    
Cost 44,007 44,034
Accumulated Depreciation 3,836 3,562
Net Property and Equipment $ 40,171 $ 40,472