Stock-Based Compensation (Narrative) (Details)						1 Months Ended				12 Months Ended
	Sep. 09, 2014 USD ($) shares	Aug. 27, 2014 $ / shares	Nov. 10, 2013	Nov. 10, 2012	Nov. 10, 2011	Aug. 31, 2015 shares	Nov. 30, 2014 USD ($) $ / shares shares	Aug. 31, 2014 USD ($) $ / shares shares	Aug. 31, 2013 shares	Dec. 31, 2017 USD ($)	Jun. 30, 2016 USD ($) $ / shares shares	Jun. 30, 2015 USD ($) shares	Jun. 30, 2014 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Number of shares								464,410	224,896
Award shares vested percentage					33.00%
Exercisable stock options											373,435	330,967	462,333
Stock-based compensation charge, net | $											$ 3,598,000	$ 3,195,000	$ 3,718,000
Share-based compensation, number of shares exercised											323,645	773,633	26,667
Forfeitures, Number of shares											0	0	136,420
Exercised of stock option, shares | $											$ 3,762,000	$ 2,045,000	$ 198,000
Common stock, shares issued											55,271,954	46,679,565
Expected life (in years)											3 years	3 years	3 years
Period of trading days to the trigger events											30 days
Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, number of shares exercised												336,584
Net1 UTA [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred tax asset | $											$ 1,800,000	$ 1,400,000
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period											3 years
Awards provided for vesting upon recipients continuous service through vesting date and company achieving financial performance target					0.33
Unrecognized compensation cost, expected recognition period, years											3 years
Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total number of shares of common stock issuable under plan											11,052,580
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
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation options expiration period, in years											10 years
Granted, Number of shares											0
Exercisable stock options	572,238
Proceeds from exercise of stock options | $											$ 3,800,000	$ 2,000,000
Forfeitures, Number of shares												0	0
Unrecognized compensation cost | $											$ 800,000
Portion of stock options exercised during period											323,645	201,395
Unrecognized compensation cost, expected recognition period, years											2 years
Exercised of stock option, shares | $	$ 336,584
Risk-free rate												1.00%	0.90%
Expected volatility												60.00%	50.00%
Expected life (in years)												3 years	3 years
Expected volatility calculation term											250 days
Stock Options [Member] | Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Proceeds from exercise of stock options | $													$ 200,000
Share-based compensation, number of shares exercised													26,667
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Number of shares						319,492	71,530	141,707	187,963				213,237
Fair value of restricted stock vested | $											$ 1,400,000	$ 3,200,000	$ 1,900,000
Forfeitures, Number of shares													7,171
Unrecognized compensation cost | $											$ 2,400,000
Risk-free rate							1.21%	1.27%
Expected volatility							63.73%	76.01%
Expected life (in years)							3 years	3 years
Future dividends | $							$ 0	$ 0
Percentage increase of common stock price on market		20.00%
Strike price | $ / shares							$ 0	$ 0
Restricted Stock [Member] | Non-employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Forfeitures, Number of shares													7,171
Restricted Stock [Member] | Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Number of shares						301,537	71,530	127,626
Restricted Stock [Member] | One-Third Shares Vest 2018 Fundamental EPS [Member] | Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fundamental EPS, to be achieved | $ / shares											$ 2.88
Restricted Stock [Member] | Two-Thirds Shares Vest 2018 Fundamental EPS [Member] | Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fundamental EPS, to be achieved | $ / shares											3.30
Restricted Stock [Member] | All Shares Vest 2018 Fundamental EPS [Member] | Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fundamental EPS, to be achieved | $ / shares											3.76
Restricted Stock [Member] | Forecast [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of restricted stock vested | $										$ 0
November 10, 2012 [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Future 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
November 10, 2013 [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Future 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
2018 Fundamental EPS [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fundamental EPS, linear interpolation | $ / shares											3.30
Minimum [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Closing price, per share | $ / shares		$ 11.23
Minimum [Member] | 2018 Fundamental EPS [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fundamental EPS | $ / shares											2.88
Maximum [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Closing price, per share | $ / shares		$ 19.41
Maximum [Member] | 2018 Fundamental EPS [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fundamental EPS | $ / shares											$ 3.76