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EQUITY - Stock options (Detail) $ / shares in Units, $ in Thousands | 1 Months Ended | 3 Months Ended
--- | --- | ---
Sep. 30, 2018 employee $ / shares shares | Aug. 31, 2017 $ / shares shares | Jul. 31, 2017 employee shares | Sep. 30, 2019 USD ($) | Sep. 30, 2018 USD ($) employee shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Stock-based compensation | $ |  |  |  | $ 8 | $ 56
Stock options |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Stock option valuation method |  |  |  | Black-Scholes valuation model |
Stock options granted (in shares) |  |  | 135,000 |  | 400,000
Number of employees | employee | 102 |  | 11 |  | 102
Stock-based compensation | $ |  |  |  | $ 200 | $ 100
Stock options | 2018 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting percentage |  |  | 0.33% |  |
Stock options | 2019 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting percentage |  |  | 0.33% |  |
Stock options | 2020 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting percentage |  |  | 0.33% |  |
Chief Executive Officer (CEO) | Stock options |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Stock options granted (in shares) | 400,000 | 19,047 |  |  |
Exercise price (in dollars per share) | $ / shares | $ 8.75 | $ 5.25 |  |  |
Chief Financial Officer ("CFO") | Stock options |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Stock options granted (in shares) |  | 25,000 |  |  |
Exercise price (in dollars per share) | $ / shares |  | $ 5.25 |  |  |
Chief Financial Officer ("CFO") | Stock options | 2018 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting percentage |  | 0.33% |  |  |
Chief Financial Officer ("CFO") | Stock options | 2019 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting percentage |  | 0.33% |  |  |
Chief Financial Officer ("CFO") | Stock options | 2020 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting percentage |  | 0.33% |  |  |

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