(Loss) Earnings Per Share (Income From Continuing Operations And Share Data Used In Basic And Diluted Earnings Per Share Computations) (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
Net (loss) earnings 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]
Undistributed (loss) earnings									$ (78,358)	$ (311,007)		$ 62,087
Percent allocated to common shareholders (Calculation 1)									98.00%	99.00%		98.00%
Numerator for (loss) earnings per share: basic and diluted									$ (76,827)	$ (306,640)		$ 61,052
Continuing									(95,315)	(307,383)		51,273
Discontinued									$ 18,488	$ 743		$ 9,779
Denominator for basic (loss) earnings per share: weighted-average common shares outstanding									56,003	55,963		55,860
Stock options									0	18		51
Denominator for diluted (loss) earnings per share: adjusted weighted average common shares outstanding and assuming conversion									56,003	55,981		55,911
(Loss) Earnings per share: Basic	$ (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]
(Loss) Earnings per share: Diluted	(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]
Basic weighted-average common shares outstanding									56,003	55,963		55,860
Basic weighted-average common shares outstanding and unvested restricted shares expected to vest									57,119	56,760		56,807
Continuing [Member]
Undistributed (loss) earnings									$ (97,214)	$ (311,761)		$ 52,142
Discontinued [Member]
Undistributed (loss) earnings									$ 18,856	$ 754		$ 9,945

[1] Refer to Note 1