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STOCKHOLDERS' EQUITY, Non-vested Service-based Awards (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Serviced Based Restricted Stock Units [Member] |  |
Share-based Compensation Expense [Abstract] |  |
Stock-based compensation expense | $ 900,000 | $ 800,000
Unrecognized compensation cost period of recognition | 1 year 10 months 24 days |
2021 | $ 811,580 |
2022 | 759,540 |
2023 | 516,286 |
Unrecognized Expense | 2,087,406 |
Performance Based Restricted Stock Units [Member] |  |
Share-based Compensation Expense [Abstract] |  |
Stock-based compensation expense | $ 0 |
Restricted Stock and RSU [Member] |  |
Share-based Compensation Expense [Abstract] |  |
Number of shares issued from vesting of restricted stock (in shares) | 128,619 | 93,408

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