Property, Plant And Equipment, Net (Summary Of Cost, Accumulated Depreciation And Carrying Amount Of Property, Plant And Equipment) (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Jun. 30, 2021
Property Plant And Equipment [Line Items]
Cost	$ 59,848	$ 46,027
Accumulated depreciation	35,249	38,535
Carrying amount	24,599	7,492
Safe Assets [Member]
Property Plant And Equipment [Line Items]
Cost	16,275	0
Accumulated depreciation	939	0
Carrying amount	15,336	0
Computer Equipment [Member]
Property Plant And Equipment [Line Items]
Cost	32,814	33,476
Accumulated depreciation	26,420	29,662
Carrying amount	6,394	3,814
Furniture And Office Equipment [Member]
Property Plant And Equipment [Line Items]
Cost	7,549	7,492
Accumulated depreciation	6,060	6,587
Carrying amount	1,489	905
Motor Vehicles [Member]
Property Plant And Equipment [Line Items]
Cost	3,195	5,059
Accumulated depreciation	1,829	2,286
Carrying amount	1,366	2,773
Plant And Machinery [Member]
Property Plant And Equipment [Line Items]
Cost	15	0
Accumulated depreciation	1	0
Carrying amount	$ 14	$ 0