Acquisition And Disposal Of Controlling Interest In DNI (Impact Of Deconsolidation Of DNI And Calculation Of Net Loss Recognized On Deconsolidation) (Details) $ in Thousands, R in Millions		3 Months Ended			9 Months Ended
		Mar. 31, 2019 USD ($)	Mar. 31, 2018 USD ($)	[3]	Mar. 31, 2019 ZAR (R)	Mar. 31, 2019 USD ($)	Mar. 31, 2018 USD ($)	[3]	Mar. 31, 2019 USD ($)	Jun. 30, 2018 USD ($)	[1]
Carrying value of non-controlling interest									$ 343	$ 95,911
Released from accumulated other comprehensive income - foreign currency translation reserve (Note 13)		$ (1,806)				$ (1,806)
Loss recognized on disposal, after tax	[2]	$ (4,728)	$ 3,291			2,690	$ 5,202
Equity Method Investment 30% Retained Interest [Member]
Fair value of retained interest of 30% in DNI									59,346
Subtotal									59,346
Less: carrying value of DNI, comprising									58,110
Cash and cash equivalents									633
Accounts receivable, net									7,358
Finance loans receivable, net									308
Inventory									268
Property, plant and equipment, net									379
Equity-accounted investments (Note 8)									72
Goodwill (Note 9)									33,834
Intangible assets, net									24,183
Deferred income taxes									8
Other long-term assets									7,950
Accounts payable									(1,553)
Other payables									(4,936)
Income taxes payable									(743)
Deferred income taxes									(6,612)
Long-term debt (Note 11)									(3,039)
Loss recognized on disposal, before tax, comprising						1,236
Taxes related to gain recognized on disposal						3,331
Loss recognized on disposal, after tax						(2,095)
Equity Method Investment Attributed To Non Controlling Interest [Member]
Carrying value of non-controlling interest									88,934
Subtotal									88,934
Less: carrying value of DNI, comprising									88,934
Cash and cash equivalents									969
Accounts receivable, net									11,262
Finance loans receivable, net									472
Inventory									410
Property, plant and equipment, net									579
Equity-accounted investments (Note 8)									110
Goodwill (Note 9)									51,779
Intangible assets, net									37,009
Deferred income taxes									13
Other long-term assets									12,167
Accounts payable									(2,376)
Other payables									(7,553)
Income taxes payable									(1,137)
Deferred income taxes									(10,119)
Long-term debt (Note 11)									(4,651)
Related To Fair Value Adjustment Of Retained Interest In 38% Of DNI [Member] | Equity Method Investment 30% Retained Interest [Member]
Loss recognized on disposal, before tax, comprising						1,236
DNI [Member] | Equity Method Investment Total [Member]
Fair value of consideration received									27,626
Fair value of retained interest of 30% in DNI									74,195
Carrying value of non-controlling interest									88,934
Subtotal									190,755
Less: carrying value of DNI, comprising									195,895
Cash and cash equivalents									2,114
Accounts receivable, net									24,577
Finance loans receivable, net									1,030
Inventory									893
Property, plant and equipment, net									1,265
Equity-accounted investments (Note 8)									242
Goodwill (Note 9)									113,003
Intangible assets, net									80,769
Deferred income taxes									28
Other long-term assets									26,553
Accounts payable									(5,186)
Other payables									(16,484)
Income taxes payable									(2,482)
Deferred income taxes									(22,083)
Long-term debt (Note 11)									(10,150)
Released from accumulated other comprehensive income - foreign currency translation reserve (Note 13)						1,806
Loss recognized on disposal, before tax, comprising						(5,140)
Loss recognized on disposal, after tax						(5,140)
DNI [Member] | Equity Method Investment 17% Sold [Member]
Fair value of consideration received									27,626
Subtotal									27,626
Less: carrying value of DNI, comprising									34,311
Cash and cash equivalents									354
Accounts receivable, net									4,116
Finance loans receivable, net									173
Inventory									149
Property, plant and equipment, net									212
Equity-accounted investments (Note 8)									41
Goodwill (Note 9)									18,924
Intangible assets, net									13,526
Deferred income taxes									5
Other long-term assets									4,447
Accounts payable									(868)
Other payables									(2,760)
Income taxes payable									(416)
Deferred income taxes									(3,698)
Long-term debt (Note 11)									(1,700)
Released from accumulated other comprehensive income - foreign currency translation reserve (Note 13)						1,806
Loss recognized on disposal, before tax, comprising						(6,685)
Taxes related to gain recognized on disposal						505
Loss recognized on disposal, after tax						(7,190)
DNI [Member] | Equity Method Investment 8% Retained Interest Sold In May 2019 [Member]
Fair value of retained interest of 30% in DNI									14,849
Subtotal									14,849
Less: carrying value of DNI, comprising									14,540
Cash and cash equivalents									158
Accounts receivable, net									1,841
Finance loans receivable, net									77
Inventory									66
Property, plant and equipment, net									95
Equity-accounted investments (Note 8)									19
Goodwill (Note 9)									8,466
Intangible assets, net									6,051
Deferred income taxes									2
Other long-term assets									1,989
Accounts payable									(389)
Other payables									(1,235)
Income taxes payable									(186)
Deferred income taxes									(1,654)
Long-term debt (Note 11)									(760)
Loss recognized on disposal, before tax, comprising						309
Taxes related to gain recognized on disposal						(3,836)
Loss recognized on disposal, after tax						4,145
DNI [Member] | Related To Sale Of 17% Of DNI [Member] | Equity Method Investment Total [Member]
Loss recognized on disposal, before tax, comprising						(6,685)
DNI [Member] | Related To Sale Of 17% Of DNI [Member] | Equity Method Investment 17% Sold [Member]
Loss recognized on disposal, before tax, comprising						(6,685)
DNI [Member] | Related To Fair Value Adjustment Of Retained Interest In 38% Of DNI [Member] | Equity Method Investment Total [Member]
Loss recognized on disposal, before tax, comprising						1,545
DNI [Member] | Related To Fair Value Adjustment Of Retained Interest In 38% Of DNI [Member] | Equity Method Investment 8% Retained Interest Sold In May 2019 [Member]
Loss recognized on disposal, before tax, comprising						$ 309
DNI [Member] | Discontinued [Member]
Percentage of ownership interest retained					38.00%	38.00%
Amount used to calculate fair value of Retained interest in 38% of DNI | R					R 215.0
Percentage used to calculate fair value of retained interest in 38% of DNI					7.60524%	7.60524%
Capital gain (loss) as result of disposal of business						$ (1,500)
Valuation allowance against capital loss resulted from disposal of DNI						1,500
DNI [Member] | Discontinued [Member] | Equity Method Investment 17% Sold [Member]
Capital gain (loss) as result of disposal of business						$ 500
Percentage of ownership interest sold in business					17.00%	17.00%
DNI [Member] | Discontinued [Member] | Equity Method Investment 8% Retained Interest Sold In May 2019 [Member]
Capital gain (loss) as result of disposal of business						$ 5,300
DNI [Member] | Discontinued [Member] | Equity Method Investment 30% Retained Interest [Member]
Capital gain (loss) as result of disposal of business						(3,300)
DNI [Member] | Discontinued [Member] | Re-measurement Of Retained 38% Interest [Member]
Capital gain (loss) as result of disposal of business						$ 2,000
DNI [Member] | Short -term Loan [Member] | Discontinued [Member]
Other payables					R (60.5)				$ (4,200)

[1] Derived from audited financial statements filed on Form 10-K/A on December 6, 2018 (Note 1)

[2] Refer to Note 2 for discontinued operations disclosures.

[3] Refer to Note 1