Earnings Per Share (Basic And Diluted Earnings Per Share) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Earnings Per Share [Abstract]
Net income attributable to Net 1	$ 12,749	$ 2,629	$ 24,345	$ 9,373
Undistributed earnings	12,749	2,629	24,345	9,373
Percent allocated to common shareholders (Calculation 1)	99.00%	99.00%	99.00%	99.00%
Numerator for earnings per share: basic and diluted	$ 12,594	$ 2,597	$ 24,075	$ 9,256
Weighted average number of outstanding shares of common stock - basic	45,221	44,989	45,218	44,981
Effect of dilutive securities: Performance shares related to acquisitions
Effect of dilutive securities: Stock options	156	26	113	37
Weighted average number of outstanding shares of common stock - diluted	45,377	45,015	45,331	45,018
Basic	$ 0.28	$ 0.06	$ 0.53	$ 0.21
Diluted	$ 0.28	$ 0.06	$ 0.53	$ 0.21
Basic weighted-average common shares outstanding and unvested restricted shares expected to vest (B)	45,776	45,550	45,725	45,550