(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, shares in Thousands, $ in Thousands		3 Months Ended			9 Months Ended
		Mar. 31, 2019	Mar. 31, 2018		Mar. 31, 2019	Mar. 31, 2018
Net (loss) income attributable to Net1	[1]	$ (54,784)	$ 32,375	[2]	$ (123,924)	$ 61,480	[2]
Undistributed (loss) earnings		$ (54,784)	$ 32,375		$ (123,924)	$ 61,480
Percent allocated to common shareholders (Calculation 1)		98.00%	98.00%		99.00%	98.00%
Numerator for (loss) earnings per share: basic and diluted		$ (53,958)	$ 31,868		$ (122,113)	$ 60,490
Continuing		(49,540)	28,629		(121,117)	57,252
Discontinued		$ (4,417)	$ 3,239		$ (996)	$ 3,238
Denominator for basic (loss) earnings per share: weighted-average common shares outstanding		55,971	55,828		55,965	55,874
Effect of dilutive securities: Stock options			61		24	54
Denominator for diluted (loss) earnings per share: adjusted weighted average common shares outstanding and assumed conversion		55,971	55,889		55,989	55,928
(Loss) Earnings per share: Basic	[1]	$ (0.96)	$ 0.57	[2]	$ (2.18)	$ 1.08	[2]
Continuing	[1]	(0.88)	0.51	[2]	(2.16)	1.02	[2]
Discontinued	[1]	(0.08)	0.06	[2]	(0.02)	0.06	[2]
(Loss) Earnings per share: Diluted	[1]	(0.96)	0.57	[2]	(2.18)	1.08	[2]
Continuing	[1]	(0.88)	0.51	[2]	(2.16)	1.02	[2]
Discontinued	[1]	$ (0.08)	$ 0.06	[2]	$ (0.02)	$ 0.06	[2]
Basic weighted-average common shares outstanding (A)		55,971	55,828		55,965	55,874
Basic weighted-average common shares outstanding and unvested restricted shares expected to vest (B)		56,828	56,716		56,795	56,788
Continuing [Member]
Undistributed (loss) earnings		$ (50,299)	$ 29,084		$ (122,913)	$ 58,189
Discontinued [Member]
Undistributed (loss) earnings		$ (4,485)	$ 3,291		$ (1,011)	$ 3,291

[1] Refer to Note 2 for discontinued operations disclosures.

[2] Refer to Note 1