STOCK-BASED COMPENSATION AND WARRANTS - Stock option plans (Details) - shares shares in Thousands |
Mar. 31, 2021 |
Jun. 30, 2020 |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Number of shares authorized | 951 | |
| Number of shares outstanding | 874 | 963 |
| Number of shares available | 77 | |
| 2014 Plan | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Number of shares authorized | 3 | |
| Number of shares outstanding | 3 | |
| 2015 Plan | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Number of shares authorized | 88 | |
| Number of shares outstanding | 88 | |
| 2016 Plan | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Number of shares authorized | 560 | |
| Number of shares outstanding | 483 | |
| Number of shares available | 77 | |
| 2019 Plan | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Number of shares authorized | 300 | |
| Number of shares outstanding | 300 |
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Number of shares authorized for issuance under share-based payment arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Number of options outstanding, including both vested and non-vested options. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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