Property, Plant And Equipment, Net (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Property, Plant and Equipment [Line Items]
Cost	$ 139,219	$ 133,109
Accumulated depreciation	91,422	84,808
Carrying amount	47,797	48,301
Land [Member]
Property, Plant and Equipment [Line Items]
Cost	967	858
Accumulated depreciation
Carrying amount	967	858
Building And Structures [Member]
Property, Plant and Equipment [Line Items]
Cost	530	471
Accumulated depreciation	128	92
Carrying amount	402	379
Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Cost	110,393	101,536
Accumulated depreciation	73,908	69,573
Carrying amount	36,485	31,963
Furniture And Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Cost	6,686	7,864
Accumulated depreciation	4,799	5,627
Carrying amount	1,887	2,237
Motor Vehicles [Member]
Property, Plant and Equipment [Line Items]
Cost	20,575	22,127
Accumulated depreciation	12,519	9,263
Carrying amount	8,056	12,864
Plant And Equipment [Member]
Property, Plant and Equipment [Line Items]
Cost	68	253
Accumulated depreciation	$ 68	$ 253