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, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Earnings Per Share [Abstract]
Net income attributable to Net1	$ 3,009	$ 18,392	$ 32,114	$ 61,665
Undistributed earnings	$ 3,009	$ 18,392	$ 32,114	$ 61,665
Percent allocated to common shareholders	98.00%	98.00%	98.00%	98.00%
Numerator for earnings per share: basic and diluted	$ 2,962	$ 18,064	$ 31,597	$ 60,609
Denominator for basic earnings per share: weighted-average common shares outstanding	55,828	53,666	55,874	52,054
Effect of dilutive securities: Stock options	61	169	54	127
Denominator for diluted earnings per share: adjusted weighted average common shares outstanding and assumed conversion	55,889	53,835	55,928	52,181
Earnings per share: Basic	$ 0.05	$ 0.34	$ 0.57	$ 1.16
Earnings per share: Diluted	$ 0.05	$ 0.34	$ 0.56	$ 1.16
Basic weighted-average common shares outstanding (A)	55,828	53,666	55,874	52,054
Basic weighted-average common shares outstanding and unvested restricted shares expected to vest (B)	56,716	54,639	56,788	52,961