Stock-Based Compensation (Narrative) (Details) (USD $)	0 Months Ended	1 Months Ended								12 Months Ended						1 Months Ended						9 Months Ended	12 Months Ended									1 Months Ended
	Nov. 10, 2011	May 31, 2012	Feb. 29, 2012	Aug. 31, 2011	Nov. 30, 2010	Oct. 31, 2010	Aug. 31, 2010	Aug. 31, 2009	Aug. 31, 2007	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2009	Jun. 30, 2012 Net1 UTA [Member]	Jun. 30, 2011 Net1 UTA [Member]	Nov. 30, 2011 Restricted Stock [Member]	Aug. 31, 2011 Restricted Stock [Member]	Nov. 30, 2010 Restricted Stock [Member]	Oct. 31, 2010 Restricted Stock [Member]	Aug. 31, 2010 Restricted Stock [Member]	Aug. 31, 2009 Restricted Stock [Member]	Mar. 31, 2012 Restricted Stock [Member]	Jun. 30, 2012 Restricted Stock [Member]	Jun. 30, 2011 Restricted Stock [Member]	Jun. 30, 2012 Stock Options [Member]	Jun. 30, 2011 Stock Options [Member]	Jun. 30, 2012 Stock Incentive Plan [Member]	Jun. 30, 2012 November 10, 2012 [Member] Restricted Stock [Member]	Jun. 30, 2012 November 10, 2013 [Member] Restricted Stock [Member]	Jun. 30, 2011 August Two Thousand Seven Tranche [Member]	Jun. 30, 2011 October Two Thousand Ten Tranche [Member]	Aug. 31, 2009 Maximum [Member] Restricted Stock [Member]	Aug. 31, 2009 Minimum [Member] Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total number of shares of common stock issuable under plan									591,500																		8,552,580
Maximum number of shares for which awards may granted during calendar year to any participant																											569,120
Maximum number of shares subject to stock option awards that can be granted during calendar year																											569,120
Maximum amount that can be granted in calendar year awards other than stock options																											$ 20,000,000
Share based compensation options expiration period, in years										10 years
Fair Value Assumptions Expected Volatility Period In Days										250 days
Period which shares may not be disposed of in any way, after restricted stock become vested and nonforfeited, in months										11 months
Required annual incease in fundamental EPS																																25.00%	20.00%
Annual constant tax rate																							30.00%
Awards provided for vesting upon recipients continuous service through vesting date and company achieving financial performance target																0.33	0.33			0.33	0.33
Futute awards provided for vesting upon recipients continuous service through vesting date and company achieving financial performance target, for November 10, 2012 and 2013																												0.33	0.33
Restricted stock shares awarded		2,574	550,000	30,155	83,000	60,000	13,956	10,098	197,156									83,000	60,000
Number of executive officers that were approved for shares																		2
Fundamental EPS																							$ 1.60	$ 1.44
Future fundamental EPS																							$ 1.90
Award shares vested percentage	33.00%
Exercisable stock options										300,000	380,000	374,000
Forfeitures, Number of shares										(240,073)
Proceeds from exercise of stock options												700,000
Restricted stock										646,617	103,672	407,828	597,162											257,156
Stock-based compensation charge										2,775,000	1,720,000	5,670,000
Reversal of stock compensation charge related to restricted stock that did not vest											3,492,000																			3,400,000	90,000
Fair value of restricted stock vested										200,000	2,300,000	3,800,000
Restricted stock forfeited										(5,976)
Unrecognized compensation cost																							5,900,000		800,000
Deferred tax asset														$ 1,100,000	$ 800,000
Unrecognized compensation cost, expected recognition period, years																						3 years			3 years	3 years