Stock-Based Compensation (Narrative) (Details) - USD ($)					1 Months Ended											12 Months Ended
	Mar. 01, 2020	Mar. 01, 2019	Aug. 23, 2017	Aug. 27, 2014	May 31, 2018	Mar. 31, 2018	Aug. 31, 2017	Jun. 30, 2017	May 31, 2017	Aug. 31, 2016	May 31, 2016	Aug. 31, 2015	Nov. 30, 2014	Aug. 31, 2014	Aug. 31, 2008	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expired unexercised, number of shares																	474,443
Exercisable stock options																105,982	154,803	373,435
Stock-based compensation charge, net																$ 2,607,000	$ 1,982,000	$ 3,598,000
Share-based compensation, number of shares exercised																	321,026	323,645
Number of shares, forfeitures																37,333	435,448	0
Exercised of stock option, shares																	$ 2,879,000	$ 3,762,000
Common stock, shares issued								56,369,737								56,685,925	56,369,737
Net1 UTA [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred tax asset								$ 900,000								$ 800,000	$ 900,000
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period																3 years
Unrecognized compensation cost, expected recognition period, years																2 years
Period of trading days to the trigger events																30 days
Restricted Stock [Member] | Non-Employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period																	3 years
Vested number of shares of restricted stock																56,250
Restricted Stock [Member] | Independent Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period																1 year
Restricted Stock [Member] | One-Third Shares Vest 2019 Fundamental EPS [Member] | Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fundamental EPS, to be achieved																$ 2.60
Restricted Stock [Member] | Two-Thirds Shares Vest 2019 Fundamental EPS [Member] | Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fundamental EPS, to be achieved																2.80
Restricted Stock [Member] | All Shares Vest 2019 Fundamental EPS [Member] | Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fundamental EPS, to be achieved																$ 3.00
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															200,000	0	0	0
Unrecognized compensation cost																$ 0
Unrecognized compensation cost, expected recognition period, years																2 years
Exercised of stock option, shares																$ 0
Strike price															$ 24.46
Options exercise price range, lower limit																$ 7.35
Options exercise price range, upper limit																$ 24.46
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Number of shares					7,000	22,817	588,594		2,587	387,000		319,492					618,411	389,587
Fair value of restricted stock vested																$ 500,000	$ 2,600,000	$ 1,400,000
Unrecognized compensation cost																$ 3,600,000
Expected volatility													63.73%	76.01%
Expected life (in years)													3 years	3 years
Risk-free rate													1.21%	1.27%
Future dividends													$ 0	$ 0
Percentage increase of common stock price on market				20.00%
Strike price													$ 0	$ 0
Forfeitures, Number of Shares of Restricted Stock								(205,470)								(302,223)	(205,470)
Vested number of shares of restricted stock							56,250	200,000		68,091		71,574						268,091
Restricted Stock [Member] | August 2015 Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Forfeitures, Number of Shares of Restricted Stock																(173,262)
Restricted Stock [Member] | August 2017 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility							44.00%
Expected life (in years)							3 years
Future dividends							$ 0
Expected volatility calculation term							30 days
Strike price							$ 0.00
Restricted Stock [Member] | August 2017 [Member] | Below $15 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance target, per share							$ 15.00
Vesting percentage							0.00%
Restricted Stock [Member] | August 2017 [Member] | At or above $15 and below $19 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage							33.00%
Restricted Stock [Member] | August 2017 [Member] | At or above $19 and below $23 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage							66.00%
Restricted Stock [Member] | August 2017 [Member] | At or above $23 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance target, per share							$ 23.00
Vesting percentage							100.00%
Restricted Stock [Member] | Executive Officer [Member] | August 2017 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Number of shares							210,000
Performance target, per share			$ 23.00
Percentage of increase target price			35.00%
Closing price, per share			$ 9.38
Restricted Stock [Member] | Executive Officer [Member] | August 2016 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Number of shares										350,000
Restricted Stock [Member] | Non-Employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares, forfeitures																	205,470
Restricted Stock [Member] | Non-Employee Directors [Member] | August 2017 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting date							Aug. 23, 2018
Granted, Number of shares							52,594
Restricted Stock [Member] | Non-Employee Directors [Member] | August 2016 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Number of shares										37,000
Restricted Stock [Member] | Non-Employee Directors [Member] | August 2015 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Number of shares												17,955
Restricted Stock [Member] | Executive Officers And Employees [Member] | August 2017 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Number of shares							326,000
Restricted Stock [Member] | Executive Officers And Employees [Member] | May 2018 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting date					Aug. 23, 2020
Restricted Stock [Member] | Executive Officers And Employees [Member] | August 2015 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Number of shares												301,537
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] | Employees [Member] | May 2018 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Number of shares					7,000
Restricted Stock [Member] | Former Chief Executive Officer [Member] | August 2016 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Number of shares																	200,000
Restricted Stock [Member] | Chief Financial Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Number of shares																22,817
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																$ 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																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																$ 3.76
Restricted Stock [Member] | Forecast [Member] | Chief Financial Officer [Member] | Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested number of shares of restricted stock		11,409
Restricted Stock [Member] | Forecast [Member] | Chief Financial Officer [Member] | Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested number of shares of restricted stock	11,408
Restricted Stock [Member] | Termination Which Did Not Have Performance Or Market Conditions [Member] | Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares forfeited																3,000
Restricted Stock [Member] | Termination Which Either Performance Or Market Conditions [Member] | Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares forfeited																30,635
2019 Fundamental EPS [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fundamental EPS, linear interpolation																$ 2.80
2019 Fundamental EPS [Member] | Remuneration Committee Of The Board Agreed For Accelerated Vesting [Member] | Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Number of shares										350,000
2018 Fundamental EPS [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fundamental EPS, linear interpolation																$ 3.30
2018 Fundamental EPS [Member] | Not Achieving 2018 Fundamental EPS [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of common stock shares that will impact fundamental EPS calculation											10,000,000
2018 Fundamental EPS [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Reversed stock-based compensation charge, shares																301,537
Minimum [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Closing price, per share				$ 11.23
Minimum [Member] | Restricted Stock [Member] | August 2017 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free rate							1.275%
Minimum [Member] | Restricted Stock [Member] | August 2017 [Member] | At or above $15 and below $19 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance target, per share							$ 15.00
Minimum [Member] | Restricted Stock [Member] | August 2017 [Member] | At or above $19 and below $23 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance target, per share							$ 19.00
Minimum [Member] | 2019 Fundamental EPS [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fundamental EPS																$ 2.60
Minimum [Member] | 2018 Fundamental EPS [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fundamental EPS																2.88
Maximum [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Closing price, per share				$ 19.41
Maximum [Member] | Restricted Stock [Member] | August 2017 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free rate							1.657%
Maximum [Member] | Restricted Stock [Member] | August 2017 [Member] | At or above $15 and below $19 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance target, per share							$ 19.00
Maximum [Member] | Restricted Stock [Member] | August 2017 [Member] | At or above $19 and below $23 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance target, per share							$ 23.00
Maximum [Member] | 2019 Fundamental EPS [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fundamental EPS																3.00
Maximum [Member] | 2018 Fundamental EPS [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fundamental EPS																$ 3.76