Unaudited Quarterly Results (Schedule Of Unaudited Consolidated Statements Of Operations) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2020	Jun. 30, 2019		Jun. 30, 2018
Selected Quarterly Financial Information [Line Items]
Revenue	$ 25,978	$ 36,514	$ 40,567	$ 47,938	$ 17,053	$ 36,586	$ 42,042	$ 70,546	$ 150,997	$ 166,227		$ 459,575
Operating (loss) income	(13,180)	(14,212)	(10,420)	(6,436)	(52,356)	(23,776)	(51,465)	(7,335)	(44,248)	(134,932)	[1]	53,809	[1]
Net loss attributable to Net1	(38,880)	(34,881)	(205)	(4,392)	(183,048)	(58,819)	(63,941)	(5,199)	(78,358)	(311,007)	[1]	62,087	[1]
Continuing	(38,601)	(48,361)	(2,925)	(7,327)	(184,320)	(51,050)	(66,723)	(9,668)	(97,214)	(311,761)	[1]	52,142	[1]
Discontinued	$ (279)	$ 13,480	$ 2,720	$ 2,935	$ 1,272	$ (7,769)	$ 2,782	$ 4,469	$ 18,856	$ 754	[1]	$ 9,945	[1]
Basic (loss) earnings attributable to Net1 shareholders	$ (0.68)	$ (0.61)	$ 0	$ (0.08)	$ (3.22)	$ (1.03)	$ (1.12)	$ (0.09)	$ (1.37)	$ (5.48)	[1]	$ 1.1	[1]
Continuing	(0.68)	(0.85)	(0.05)	(0.13)	(3.24)	(0.9)	(1.17)	(0.17)	(1.7)	(5.49)	[1]	0.92	[1]
Discontinued	0	0.24	0.05	0.05	0.02	(0.13)	0.05	0.08	0.33	0.01	[1]	0.18	[1]
Diluted (loss) earnings attributable to Net1 shareholders	(0.69)	(0.62)	0	(0.08)	(3.27)	(1.04)	(1.13)	(0.09)	(1.37)	(5.48)	[1]	1.09	[1]
Continuing	(0.69)	(0.86)	(0.05)	(0.13)	(3.29)	(0.91)	(1.18)	(0.17)	(1.7)	(5.49)	[1]	0.92	[1]
Discontinued	$ 0	$ 0.24	$ 0.05	$ 0.05	$ 0.02	$ (0.13)	$ 0.05	$ 0.08	$ 0.33	$ 0.01	[1]	$ 0.17	[1]
Segment Continuing Operations [Member] | Refund [Member]
Selected Quarterly Financial Information [Line Items]
Revenue					$ 19,709

[1] Refer to Note 1