Borrowings (Summary Of Long-Term Borrowings) (Details) - USD ($) $ in Thousands		3 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Jun. 30, 2018
Debt Instrument [Line Items]
Included in current portion of long-term borrowings		$ 33,937		$ 44,695	[1]
Included in long-term borrowings		11,660		5,469	[1]
Balance as of June 30, 2018		50,164
Utilzed		7,801	$ 95,431
Repaid		(10,260)	$ (14,260)
Foreign currency adjustment	[2]	(2,108)
Balance as of Septmeber 30, 2018		45,597
Amended July 2017 [Member] | South Africa [Member]
Debt Instrument [Line Items]
Included in current portion of long-term borrowings		33,937		44,695
Included in long-term borrowings		3,529		5,469
Balance as of June 30, 2018		50,164
Utilzed
Repaid		(10,260)
Foreign currency adjustment	[2]	(2,438)
Balance as of Septmeber 30, 2018		37,466
June 2018 Facility [Member] | South Africa [Member]
Debt Instrument [Line Items]
Included in current portion of long-term borrowings
Included in long-term borrowings		8,131
Balance as of June 30, 2018
Utilzed		7,801
Repaid
Foreign currency adjustment	[2]	330
Balance as of Septmeber 30, 2018		$ 8,131

[1] Certain amounts shown here do not correspond to the Company's 2018 financial statements and reflects an adjustment made, refer to Note 1 See Notes to Unaudited Condensed Consolidated Financial Statements

[2] Represents the effects of the fluctuations between the ZAR and the U.S. dollar.