Condensed Consolidated Statement Of Changes In Equity - 9 months ended Mar. 31, 2018 - USD ($) $ in Thousands		Common And Treasury Stock [Member]	Treasury Stock [Member]	Number Of Shares, Net Of Treasury [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Total Net1 Equity [Member]	Non-Controlling Interest [Member]	Total
Balance, Number of Shares at Jun. 30, 2017		81,261,029	(24,891,292)	56,369,737
Balance at Jun. 30, 2017		$ 80	$ (286,951)		$ 273,733	$ 773,276	$ (162,569)	$ 597,569	$ 2,766	$ 600,335	[1]
Redeemable Common Stock (Note 1), Balance at Jun. 30, 2017	[1]									107,672
Restricted stock granted (Note 13), shares		611,411		611,411
Stock-based compensation charge (Note 13)					2,052			2,052		2,052
Reversal of stock compensation charge (Note 13)					(42)			(42)		(42)
Reversal of stock compensation charge (Note 13), shares		(125,961)		(125,961)
Reversal of stock based-compensation charge related to equity-accounted investment					(207)			(207)		(207)
Net income						32,114		32,114	903	33,017
Other comprehensive income (Note 12)							89,088	89,088	371	$ 89,459
Balance, Number of Shares at Mar. 31, 2018		81,746,479	(24,891,292)	56,855,187						56,855,187
Balance at Mar. 31, 2018		$ 80	$ (286,951)		$ 275,536	$ 805,390	$ (73,481)	$ 720,574	$ 4,040	$ 724,614
Redeemable Common Stock (Note 1), Balance at Mar. 31, 2018										$ 107,672

[1] Derived from audited financial statements