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STOCK OPTIONS - Additional details (Details) - USD ($) |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Dec. 27, 2016 | Sep. 09, 2016 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] |  |  |  |  |  |
Share-based compensation expense |  |  | $ 0 | $ 672,223 | $ 387,726 |
Total intrinsic value of options exercised |  |  | 0 | $ 0 | $ 1,414,892 |
Assumed dividends |  |  | $ 0 |  |  |
Stock Option |  |  |  |  |  |
Fair value assumptions |  |  |  |  |  |
Number of common stock issued on exercise of stock options (in shares) |  |  | 0 | 0 | 1,046,580 |
Stock options |  |  |  |  |  |
Fair value assumptions |  |  |  |  |  |
Risk-free rate (as a percent) |  | 1.51% |  |  |  |
Expected life |  | 7 years 1 month 6 days |  |  |  |
Director, officer, and employee | Stock Option |  |  |  |  |  |
Stock Options Outstanding |  |  |  |  |  |
Shares terminated |  |  | 505,216 | 12,400 | 10,970 |
Exercise price (in dollars per share) |  |  | $ 1.57 | $ 1.51 | $ 1.52 | $ 0.94
Fair value assumptions |  |  |  |  |  |
Number of common stock issued on exercise of stock options (in shares) |  |  |  |  | 1,046,580 |
Director, officer, and employee | Stock Option | Exercise Price Dollars 1.46 |  |  |  |  |  |
Stock Options Outstanding |  |  |  |  |  |
Exercise price (in dollars per share) |  |  | $ 1.46 |  |  |
Shares Outstanding |  |  | 50,000 |  |  |
Weighted Average Remaining Contractual Life |  |  | 4 years 4 months 13 days |  |  |
Shares Exercisable |  |  | 50,000 |  |  |
Director, officer, and employee | Stock Option | Exercise Price Dollars 0.81 |  |  |  |  |  |
Stock Options Outstanding |  |  |  |  |  |
Exercise price (in dollars per share) |  |  | $ 0.81 |  |  |
Shares Outstanding |  |  | 535,303 |  |  |
Weighted Average Remaining Contractual Life |  |  | 6 months 15 days |  |  |
Shares Exercisable |  |  | 535,303 |  |  |
Director, officer, and employee | Stock Option | Exercise Price Dollars 1.05 |  |  |  |  |  |
Stock Options Outstanding |  |  |  |  |  |
Exercise price (in dollars per share) |  |  | $ 1.05 |  |  |
Shares Outstanding |  |  | 250,000 |  |  |
Weighted Average Remaining Contractual Life |  |  | 7 years 11 months 27 days |  |  |
Shares Exercisable |  |  | 250,000 |  |  |
Director, officer, and employee | Stock Option | Exercise Price Dollars 2.75 |  |  |  |  |  |
Stock Options Outstanding |  |  |  |  |  |
Exercise price (in dollars per share) |  |  | $ 2.75 |  |  |
Shares Outstanding |  |  | 465,000 |  |  |
Weighted Average Remaining Contractual Life |  |  | 7 years 8 months 12 days |  |  |
Shares Exercisable |  |  | 465,000 |  |  |
Thomas J. Shaw | Stock options |  |  |  |  |  |
Stock Options Outstanding |  |  |  |  |  |
Shares terminated | 3,000,000 |  |  |  |  |
Employees | Stock Option |  |  |  |  |  |
Stock Options Outstanding |  |  |  |  |  |
Options issued (in shares) |  |  | 0 | 0 | 600,400 |
Employees | September 2016 grant | Stock Option |  |  |  |  |  |
Fair value assumptions |  |  |  |  |  |
Number of common stock issued on exercise of stock options (in shares) |  |  |  |  | 500,400 |
Weighted average fair value of options granted during period (in dollars per share) |  |  |  |  | $ 1.783 |
Annualized standard deviation (as a percent) |  |  |  |  | 67.10% |
Risk-free rate (as a percent) |  |  |  |  | 1.51% |
Expected life |  |  |  |  | 7 years 1 month 6 days |
Employees | December 2016 grant | Stock Option |  |  |  |  |  |
Fair value assumptions |  |  |  |  |  |
Number of common stock issued on exercise of stock options (in shares) |  |  |  |  | 100,000 |
Weighted average fair value of options granted during period (in dollars per share) |  |  |  |  | $ 0.728 |
Annualized standard deviation (as a percent) |  |  |  |  | 72.50% |
Risk-free rate (as a percent) |  |  |  |  | 2.37% |
Expected life |  |  |  |  | 7 years 1 month 6 days |
Director | Stock Option |  |  |  |  |  |
Stock Options Outstanding |  |  |  |  |  |
Options issued (in shares) |  |  | 0 | 0 | 150,000 |
Fair value assumptions |  |  |  |  |  |
Weighted average fair value of options granted during period (in dollars per share) |  |  |  |  | $ 0.728 |
Annualized standard deviation (as a percent) |  |  |  |  | 72.50% |
Risk-free rate (as a percent) |  |  |  |  | 2.37% |
Expected life |  |  |  |  | 7 years 1 month 6 days |
Non Employees | Stock Option |  |  |  |  |  |
Stock Options Outstanding |  |  |  |  |  |
Exercise price (in dollars per share) |  |  | $ 0.81 | $ 0.81 | $ 0.81 | $ 0.81
Non Employees | Stock Option | Exercise Price Dollars 0.81 |  |  |  |  |  |
Stock Options Outstanding |  |  |  |  |  |
Exercise price (in dollars per share) |  |  | $ 0.81 |  |  |
Shares Outstanding |  |  | 57,500 |  |  |
Weighted Average Remaining Contractual Life |  |  | 6 months 15 days |  |  |
Shares Exercisable |  |  | 57,500 |  |  |

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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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=109197908&loc=d3e5070-113901 + Details
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + 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)(ii) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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