Property, Plant And Equipment, Net (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Jun. 30, 2011
Property, Plant and Equipment [Line Items]
Cost	$ 126,858	$ 85,814
Accumulated depreciation	74,242	50,007
Carrying amount	52,616	35,807
Land [Member]
Property, Plant and Equipment [Line Items]
Cost	847	910
Accumulated depreciation
Carrying amount	847	910
Building And Structures [Member]
Property, Plant and Equipment [Line Items]
Cost	465	499
Accumulated depreciation	67	29
Carrying amount	398	470
Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Cost	88,669	64,411
Accumulated depreciation	59,062	33,417
Carrying amount	29,607	30,994
Furniture And Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Cost	14,091	8,297
Accumulated depreciation	5,815	6,378
Carrying amount	8,276	1,919
Motor Vehicles [Member]
Property, Plant and Equipment [Line Items]
Cost	20,413	8,824
Accumulated depreciation	7,178	7,745
Carrying amount	13,235	1,079
Plant And Equipment [Member]
Property, Plant and Equipment [Line Items]
Cost	2,373	2,873
Accumulated depreciation	2,120	2,438
Carrying amount	$ 253	$ 435