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Equity - Options (Details) - shares | 6 Months Ended
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Jun. 30, 2020 | Jun. 30, 2019
Stock Based Compensation Plans |  |
Options outstanding (in shares) | 15,000 |
Options exercisable (in shares) | 15,000 |
Stock options granted (in shares) | 0 | 0
Options exercised (in shares) | 0 | 0
2015 Plan |  |
Stock Based Compensation Plans |  |
Total shares reserved for issuance of common stock related to the conversion of preferred stock | 1,400,000 |

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