Equity-Accounted Investments And Other Long-Term Assets (Summary Of Movement In Equity-Accounted Investments) (Details) - USD ($) $ in Thousands	9 Months Ended			12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	[1]	Jun. 30, 2018
Investment in equity:
Balance as of, beginning	$ 85,179
Re-measurement of 8% of DNI (Note 2)				$ 14,849
Re-measurement of 30% of DNI (Note 2)				59,346
Acquisition of shares	4,909
Stock-based compensation	77	$ (207)
Comprehensive income (loss):	5,092
Other comprehensive income	5,430
Equity accounted earnings (loss)	(338)
Share of net income	2,150
Amortization of acquired intangible assets	(562)
Deferred taxes acquired intangible assets	135
Dilution resulting from corporate transactions	23
Other	(2,084)
Dividends received	(2,374)
Return on investment	(284)
Deconsolidation of DNI (Note 2)	(242)
Foreign currency adjustment	(2,199)
Balance as of, ending	164,353			85,179
Investment in loans:
Balance as of, beginning	3,152
Foreign currency adjustment	(8)
Balance as of, ending	3,144			3,152
DNI [Member]
Investment in equity:
Re-measurement of 8% of DNI (Note 2)				14,849
Re-measurement of 30% of DNI (Note 2)				59,346
Balance as of, ending	74,195
Bank Frick [Member]
Investment in equity:
Balance as of, beginning	48,129
Comprehensive income (loss):	(1,895)
Equity accounted earnings (loss)	(1,895)
Share of net income	616
Amortization of acquired intangible assets	(562)
Deferred taxes acquired intangible assets	135
Other	(2,084)
Foreign currency adjustment	(228)
Balance as of, ending	46,006			48,129
Finbond [Member]
Investment in equity:
Balance as of, beginning	30,958
Acquisition of shares	1,920
Stock-based compensation	77
Comprehensive income (loss):	7,305
Other comprehensive income	5,430
Equity accounted earnings (loss)	1,875
Share of net income	1,852
Dilution resulting from corporate transactions	23
Dividends received	(1,920)
Foreign currency adjustment	(1,921)
Balance as of, ending	36,419			30,958
Other [Member]
Investment in equity:
Balance as of, beginning	6,092
Acquisition of shares	2,989
Comprehensive income (loss):	(318)
Equity accounted earnings (loss)	(318)
Share of net income	(318)
Dividends received	(454)
Return on investment	(284)
Deconsolidation of DNI (Note 2)	(242)
Foreign currency adjustment	(50)
Balance as of, ending	7,733			6,092
Investment in loans:
Balance as of, beginning	3,152
Foreign currency adjustment	(8)
Balance as of, ending	$ 3,144			$ 3,152

[1] Refer to Note 1.