Property, Plant And Equipment, Net (Summary Of Cost, Accumulated Depreciation And Carrying Amount Of Property, Plant And Equipment) (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Jun. 30, 2023
Property Plant And Equipment [Line Items]
Cost	$ 81,698	$ 64,010
Accumulated depreciation	49,762	36,563
Carrying amount	31,936	27,447
Vaults [Member]
Property Plant And Equipment [Line Items]
Cost	24,641	19,229
Accumulated depreciation	8,838	4,353
Carrying amount	15,803	14,876
Computer Equipment [Member]
Property Plant And Equipment [Line Items]
Cost	44,538	35,158
Accumulated depreciation	32,871	25,645
Carrying amount	11,667	9,513
Furniture And Office Equipment [Member]
Property Plant And Equipment [Line Items]
Cost	9,365	7,508
Accumulated depreciation	6,854	5,602
Carrying amount	2,511	1,906
Motor Vehicles [Member]
Property Plant And Equipment [Line Items]
Cost	3,088	2,070
Accumulated depreciation	1,165	955
Carrying amount	1,923	1,115
Plant And Machinery [Member]
Property Plant And Equipment [Line Items]
Cost	66	45
Accumulated depreciation	34	8
Carrying amount	$ 32	$ 37