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Stock-Based Compensation (Narrative) (Details) - USD ($) |  |  |  |  |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2020 | Aug. 05, 2020 | Mar. 01, 2020 | Mar. 01, 2019 | Aug. 27, 2014 | Feb. 29, 2020 | May 31, 2018 | Mar. 31, 2018 | Aug. 31, 2017 | May 31, 2017 | May 31, 2016 | Nov. 30, 2014 | Aug. 31, 2014 | Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2017 | Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of stock options awarded |  |  |  |  |  |  |  |  |  |  |  |  |  | 561,000 | 600,000 |  |  |
Stock options granted exercise price |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 5.83 | $ 7.81 | $ 13.99 | $ 13.87 |
Forfeitures, Number of shares |  |  |  |  |  |  |  |  |  |  |  |  |  | 93,928 | 174,695 | 37,333 |  |
Options exercise price range, lower limit |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3.07 |  |  |  |
Options exercise price range, upper limit |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 11.23 |  |  |  |
Stock-based compensation charge, net |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,728,000 | $ 393,000 | $ 2,607,000 |  |
Deferred tax asset related to stock-based compensation |  |  |  |  |  |  |  |  |  |  |  |  |  | 400,000 | 200,000 |  |  |
Share-based compensation deferred tax asset valuation allowance |  |  |  |  |  |  |  |  |  |  |  |  |  | 400,000 | 200,000 |  |  |
Valuation allowance |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 106,433,000 | $ 125,887,000 |  |  |
Expired unexercised, number of shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 370,000 |  |  |
Exercisable, Number of Shares |  |  |  |  |  |  |  |  |  |  |  |  |  | 474,986 |  |  |  |
August 2015 Awards [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of stock options awarded |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 301,537 |
August 2016 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fundamental EPS, linear interpolation |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2.8 |  |  |
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, expiration period |  |  |  |  |  |  |  |  |  |  |  |  |  | 10 years |  |  |  |
Share based compensation, vesting period |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 years |  |  |  |
Exercisable stock options |  |  |  |  |  |  |  |  |  |  |  |  |  | 170,335 |  | 105,982 |  |
Options exercise price range, lower limit |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3.07 |  |  |  |
Options exercise price range, upper limit |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 11.23 |  |  |  |
Expected volatility |  |  |  |  |  |  |  |  |  |  |  |  |  | 57.00% | 44.00% |  |  |
Expected life (in years) |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 years | 3 years |  |  |
Risk-free rate |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.57% | 2.75% |  |  |
Unrecognized compensation cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 9,000,000
Unrecognized compensation cost, expected recognition period, years |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 years |  |  |  |
Stock Options [Member] | May 2009 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expired unexercised, number of shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 170,000 |  |  |
Stock Options [Member] | August 2008 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expired unexercised, number of shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 200,000 |  |  |
Stock Options [Member] | Non-Employee Directors [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of stock options awarded |  | 150,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock options granted exercise price |  | $ 3.5 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of stock options awarded |  |  |  |  |  |  |  |  |  |  |  |  |  | 568,000 | 148,000 | 618,411 |  |
Vested number of shares of restricted stock |  |  |  |  |  |  |  |  |  |  |  |  |  | 18,908 | 64,003 | 56,250 |  |
Forfeitures, Number of shares |  |  |  |  |  |  |  |  |  |  |  |  |  | 17,500 | 265,500 | 302,223 |  |
Unrecognized compensation cost |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,300,000 |  |  |  |
Unrecognized compensation cost, expected recognition period, years |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 years |  |  |  |
Fair value of restricted stock vested |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 100,000 | $ 500,000 | $ 500,000 |  |
Restricted Stock [Member] | August 2015 Awards [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Based Compensation Reversed Shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 301,537 |
Restricted Stock [Member] | September 2018 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation, vesting period |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 years |  |  |  |
Expected volatility calculation term |  |  |  |  |  |  |  |  |  |  |  |  |  | 30 years |  |  |  |
Expected volatility |  |  |  |  |  |  |  |  |  |  |  |  |  | 37.40% |  |  |  |
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 |  |  |  |
Period of trading days to the trigger events |  |  |  |  |  |  |  |  |  |  |  |  |  | 30 days |  |  |  |
Restricted Stock [Member] | February 2020 [Member] | 50% Vest [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting percentage |  |  |  |  |  |  |  |  |  |  |  |  |  | 8.00% |  |  |  |
Restricted Stock [Member] | February 2020 [Member] | 100% Vest [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting percentage |  |  |  |  |  |  |  |  |  |  |  |  |  | 14.00% |  |  |  |
Restricted Stock [Member] | Executive Officers [Member] | Time-Based Vesting [Member] | Performance Conditions Were Not Achieved [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation number of stock award forfeited |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 150,000 |  |  |
Restricted Stock [Member] | Executive Officers [Member] | Time-Based Vesting [Member] | 50% Of Original Award Forfeited Upon Disposal Of Net1 Korea [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation number of stock award forfeited |  |  |  |  |  |  |  |  |  |  |  |  |  | 7,500 |  |  |  |
Share-based compensation arrangement acceletrated vesting number |  |  |  |  |  |  |  |  |  |  |  |  |  | 7,500 |  |  |  |
Restricted Stock [Member] | Executive Officers [Member] | September 2018 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of stock options awarded |  |  |  |  |  |  |  |  |  |  |  |  |  | 148,000 |  |  |  |
Percentage of increase target price |  |  |  |  |  |  |  |  |  |  |  |  |  | 55.00% |  |  |  |
Closing price, per share |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 6.2 |  |  |  |
Share based compensation number of stock award forfeited |  |  |  |  |  |  |  |  |  |  |  |  |  | 58,000 |  |  |  |
Restricted Stock [Member] | Executive Officers [Member] | September 2018 [Member] | Below $15 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Performance target, per share |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 15 |  |  |  |
Vesting percentage |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.00% |  |  |  |
Restricted Stock [Member] | Executive Officers [Member] | September 2018 [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] | Executive Officers [Member] | September 2018 [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] | Executive Officers [Member] | September 2018 [Member] | At or above $23 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Performance target, per share |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 23 |  |  |  |
Vesting percentage |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |  |  |  |
Restricted Stock [Member] | Executive Officers [Member] | August 2017 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of stock options awarded |  |  |  |  |  |  |  |  |  |  |  |  |  | 210,000 |  |  |  |
Strike price |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |
Percentage of increase target price |  |  |  |  |  |  |  |  |  |  |  |  |  | 35.00% |  |  |  |
Closing price, per share |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 9.38 |  |  |  |
Restricted Stock [Member] | Executive Officers [Member] | August 2017 [Member] | Below $15 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Performance target, per share |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 15 |  |  |  |
Vesting percentage |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.00% |  |  |  |
Restricted Stock [Member] | Executive Officers [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] | Executive Officers [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] | Executive Officers [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 |  |  |  |
Vesting percentage |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |  |  |  |
Restricted Stock [Member] | Executive Officers [Member] | August 2017 [Member] | Market And Time-based Vesting [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation number of stock awarded |  |  |  |  |  |  |  |  | 210,000 |  |  |  |  |  |  |  |  |
Restricted Stock [Member] | Executive Officers [Member] | August 2016 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of stock options awarded |  |  |  |  |  |  |  |  |  |  |  |  |  | 350,000 |  |  |  |
Number of shares forfeited |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 150,000 |  |  |
Stock Based Compensation Reversed Shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 150,000 |  |  |
Restricted Stock [Member] | Executive Officers [Member] | August 2016 [Member] | One-Third Shares Vest 2019 Fundamental EPS [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fundamental EPS, to be achieved |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2.6 |  |  |
Restricted Stock [Member] | Executive Officers [Member] | August 2016 [Member] | Two-Thirds Shares Vest 2019 Fundamental EPS [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fundamental EPS, to be achieved |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.8 |  |  |
Restricted Stock [Member] | Executive Officers [Member] | August 2016 [Member] | All Shares Vest 2019 Fundamental EPS [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fundamental EPS, to be achieved |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3 |  |  |
Restricted Stock [Member] | Executive Officers [Member] | August 2016 [Member] | Scenario Forecast [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares forfeited | 150,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted Stock [Member] | Executive Officers [Member] | February 2020 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of stock options awarded |  |  |  |  |  |  |  |  |  |  |  |  |  | 454,400 |  |  |  |
Share based compensation number of stock award forfeited |  |  |  |  |  |  |  |  |  |  |  |  |  | 267,200 |  |  |  |
Restricted Stock [Member] | Executive Officers [Member] | February 2020 [Member] | Time-Based Vesting [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation number of stock awarded |  |  |  |  |  | 113,600 |  |  |  |  |  |  |  |  |  |  |  |
Restricted Stock [Member] | Executive Officers [Member] | February 2020 [Member] | Performance And Time-Based Vesting [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation number of stock awarded |  |  |  |  |  | 454,400 |  |  |  |  |  |  |  |  |  |  |  |
Restricted Stock [Member] | Executive Officers [Member] | February 2020 [Member] | Market And Time-based Vesting [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation number of stock awarded |  |  |  |  |  | 148,000 |  |  |  |  |  |  |  |  |  |  |  |
Restricted Stock [Member] | Executive Officers [Member] | February 2020 [Member] | Vest Upon Mr. Kotze Separation [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation arrangement acceletrated vesting number |  |  |  |  |  | 66,800 |  |  |  |  |  |  |  |  |  |  |  |
Restricted Stock [Member] | Non-Employee Directors [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation, vesting period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 year | 3 years |
Vested number of shares of restricted stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 56,250 |  |
Restricted Stock [Member] | Non-Employee Directors [Member] | August 2017 [Member] | 100% Vest [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vested number of shares of restricted stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 56,250 |  |
Restricted Stock [Member] | Non-Employee Directors [Member] | August 2017 [Member] | Vest If Recipient Was Director On August 23, 2018 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vested number of shares of restricted stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 52,594 |  |  |
Share based compensation number of stock awarded |  |  |  |  |  |  |  |  | 52,594 |  |  |  |  |  |  |  |  |
Restricted Stock [Member] | Executive Officers And Employees [Member] | Market Conditions Were Not Achieved [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation number of stock award forfeited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 95,326 |  |
Restricted Stock [Member] | Executive Officers And Employees [Member] | Performance Conditions Were Not Achieved [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation number of stock award forfeited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 173,262 |  |
Restricted Stock [Member] | Executive Officers And Employees [Member] | August 2017 [Member] | Time-Based Vesting [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation number of stock awarded |  |  |  |  |  |  |  |  | 326,000 |  |  |  |  |  |  |  |  |
Restricted Stock [Member] | Employees [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of stock options awarded |  |  |  |  |  |  |  |  |  |  |  | 71,530 | 127,626 |  |  |  |  |
Strike price |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |
Expected volatility calculation term |  |  |  |  |  |  |  |  |  |  |  |  |  | 30 days |  |  |  |
Percentage of increase target price |  |  |  |  | 20.00% |  |  |  |  |  |  |  |  |  |  |  |  |
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 |  |  |  |  |
Restricted Stock [Member] | Employees [Member] | Termination Which Either Performance Or Market Conditions [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation number of stock award forfeited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 30,635 |  |
Restricted Stock [Member] | Employees [Member] | Termination [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation number of stock award forfeited |  |  |  |  |  |  |  |  |  |  |  |  |  | 17,500 |  | 3,000 |  |
Restricted Stock [Member] | Employees [Member] | August 2015 Awards [Member] | One-Third Shares Vest 2018 Fundamental EPS [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fundamental EPS, to be achieved |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2.88 |  |
Restricted Stock [Member] | Employees [Member] | August 2015 Awards [Member] | Two-Thirds Shares Vest 2018 Fundamental EPS [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fundamental EPS, to be achieved |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.3 |  |
Restricted Stock [Member] | Employees [Member] | August 2015 Awards [Member] | All Shares Vest 2018 Fundamental EPS [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fundamental EPS, to be achieved |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3.76 |  |
Restricted Stock [Member] | Employees [Member] | Time-Based Vesting [Member] | Termination [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation number of stock award forfeited |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 115,500 |  |  |
Restricted Stock [Member] | Employees [Member] | May 2018 [Member] | Vest If Recipient Employed On Full Time Basis On August 23, 2020 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation number of stock awarded |  |  |  |  |  |  | 7,000 |  |  |  |  |  |  |  |  |  |  |
Restricted Stock [Member] | Chief Financial Officer [Member] | March 2018 [Member] | Subject To Continued Employment 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] | Chief Financial Officer [Member] | March 2018 [Member] | Subject To Continued Employment 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] | Chief Financial Officer [Member] | March 2018 [Member] | Subject To Continued Employment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vested number of shares of restricted stock |  |  | 22,817 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation number of stock awarded |  |  |  |  |  |  |  | 22,817 |  |  |  |  |  |  |  |  |  |
Restricted Stock [Member] | Employees And Former Chief Executive Officer [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation number of stock award forfeited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 205,470 |
Restricted Stock [Member] | Former Chief Executive Officer [Member] | August 2016 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation arrangement acceletrated vesting number |  |  |  |  |  |  |  |  |  | 200,000 |  |  |  |  |  |  |  |
Fundamental EPS 2018 [Member] | August 2015 Awards [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fundamental EPS, linear interpolation |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3.3 |  |  |  |
Fundamental EPS 2018 [Member] | August 2015 Awards [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 |  |  |  |  |  |  |
Minimum [Member] | August 2016 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fundamental EPS |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2.6 |  |  |
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] | Executive Officers [Member] | September 2018 [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 |  |  |  |
Minimum [Member] | Restricted Stock [Member] | Executive Officers [Member] | September 2018 [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 |  |  |  |
Minimum [Member] | Restricted Stock [Member] | Executive Officers [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 |  |  |  |
Minimum [Member] | Restricted Stock [Member] | Executive Officers [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 |  |  |  |  |  |  |  |  |  |  |  |  |  | 15 |  |  |  |
Minimum [Member] | Restricted Stock [Member] | Employees [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Closing price, per share |  |  |  |  | $ 11.23 |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum [Member] | Fundamental EPS 2018 [Member] | August 2015 Awards [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fundamental EPS |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2.88 |  |  |  |
Maximum [Member] | August 2016 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fundamental EPS |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3 |  |  |
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] | Executive Officers [Member] | September 2018 [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 |  |  |  |
Maximum [Member] | Restricted Stock [Member] | Executive Officers [Member] | September 2018 [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 |  |  |  |
Maximum [Member] | Restricted Stock [Member] | Executive Officers [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 |  |  |  |  |  |  |  |  |  |  |  |  |  | 23 |  |  |  |
Maximum [Member] | Restricted Stock [Member] | Executive Officers [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 |  |  |  |
Maximum [Member] | Restricted Stock [Member] | Employees [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Closing price, per share |  |  |  |  | $ 19.41 |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum [Member] | Fundamental EPS 2018 [Member] | August 2015 Awards [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fundamental EPS |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3.76 |  |  |  |

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