Unaudited Quartely Results (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Unaudited Quarterly Results [Abstract]
Revenue	$ 182,753	$ 138,126	$ 137,283	$ 123,494	$ 117,882	$ 111,141	$ 111,442	$ 111,682	$ 581,656	$ 452,147	$ 390,264
Operating (loss) income	42,647	23,949	18,802	16,400	13,591	(4,726)	4,972	9,325	101,798	23,162	61,150
Net (loss) income attributable to Net 1	$ 28,584	$ 17,182	$ 12,749	$ 11,596	$ 8,285	$ (4,681)	$ 2,629	$ 6,744	$ 70,111	$ 12,977	$ 44,651
Basic earnings attributable to Net1 shareholders	$ 0.59	$ 0.38	$ 0.28	$ 0.25	$ 0.18	$ (0.10)	$ 0.06	$ 0.15	$ 1.51	$ 0.28	$ 0.99
Diluted earnings attributable to Net1 shareholders	$ 0.58	$ 0.37	$ 0.28	$ 0.25	$ 0.18	$ (0.10)	$ 0.06	$ 0.15	$ 1.50	$ 0.28	$ 0.99