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STOCK OPTIONS - Outstanding (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] |  |  |  |
Share-based compensation expense | $ 0 | $ 0 | $ 0 |
Assumed dividends | $ 0 |  |  |
Lower than market |  |  |  |
Stock Options Outstanding |  |  |  |
Shares Outstanding | 199,450 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] |  |  |  |
Shares Outstanding | 199,450 |  |  |
Total intrinsic value of options exercised | $ 1,733,856 |  |  |
Director, officer, and employee | Stock Option |  |  |  |
Stock Options Outstanding |  |  |  |
Exercise price (in dollars per share) | $ 2.05 | $ 2.12 | $ 1.57 | $ 1.51
Director, officer, and employee | Stock Option | Exercise Price Dollars 1.05 |  |  |  |
Stock Options Outstanding |  |  |  |
Exercise price (in dollars per share) | $ 1.05 |  |  |
Shares Outstanding | 82,500 |  |  |
Weighted Average Remaining Contractual Life | 5 years 11 months 27 days |  |  |
Shares Exercisable | 82,500 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] |  |  |  |
Shares Outstanding | 82,500 |  |  |
Director, officer, and employee | Stock Option | Exercise Price Dollars 2.75 |  |  |  |
Stock Options Outstanding |  |  |  |
Exercise price (in dollars per share) | $ 2.75 |  |  |
Shares Outstanding | 116,950 |  |  |
Weighted Average Remaining Contractual Life | 5 years 8 months 12 days |  |  |
Shares Exercisable | 116,950 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] |  |  |  |
Shares Outstanding | 116,950 |  |  |
Non Employees | Stock Option |  |  |  |
Stock Options Outstanding |  |  |  |
Exercise price (in dollars per share) |  |  | $ 0.81 | $ 0.81

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- Definition The estimated amount of dividends to be paid to holders of the underlying shares (expected dividends) over the option's term. Dividends are taken into account because payment of dividends to shareholders reduces the fair value of the underlying shares, and option holders generally do not receive dividends. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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