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STOCK BASED COMPENSATION (Narrative) (Details) - USD ($) | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Dec. 31, 2018 | Dec. 31, 2017 | May 16, 2019 | May 15, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Pricing model used in calculation of grant-date fair value |  |  | Black-Scholes |  | Black-Scholes |  |  |
Expected dividend yield |  |  |  |  |  |  |  |
Expected volatility, minimum |  |  | 60.00% |  | 60.00% | 39.00% |  |
Expected volatility, maximum |  |  | 80.50% |  | 90.00% | 87.00% |  |
Risk-free interest rate, minimum |  |  | 1.47% |  | 1.89% | 1.16% |  |
Risk-free interest rate, maximum |  |  | 2.71% |  | 3.06% | 2.37% |  |
Unrecognized compensation expense related to non-vested market-based share awards | $ 484,626 |  | $ 484,626 |  | $ 324,497 |  |  |
Warrants exercised |  |  |  | 100,000 |  |  |  |
Proceeds from warrants exercised |  |  |  | $ 61,500 |  |  |  |
Non Qualified Stock Options And Warrants [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Aggregate intrinsic value of options and warrants outstanding and exercisable | $ 117,075 |  | $ 117,075 |  | $ 183,350 |  |  |
Closing stock price of common stock | $ 0.687 |  | $ 0.687 |  | $ 0.71 |  |  |
Intrinsic value of options and warrants exercised |  |  |  |  | $ 4,891,501 |  |  |
Options exercised |  |  |  |  | 200,000 | 469,000 |  |
Stock Option [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Options exercised | 0 | 100,000 | 0 | 100,000 |  |  |  |
Proceeds from Options exercised |  | $ 100,000 |  | $ 100,000 |  |  |  |
Minimum [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Expected option life |  |  | 5 years |  | 5 years | 11 days |  |
Maximum [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Expected option life |  |  | 10 years |  | 10 years | 9 months 29 days |  |
Transaction One [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Warrants exercised |  |  |  |  | 100,000 | 335,000 |  |
Common stock price |  |  |  |  |  | $ 1.00 |  |
Proceeds from warrants exercised |  |  |  |  | $ 61,500 | $ 335,000 |  |
Transaction Two [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Warrants exercised |  |  |  |  | 100,000 | 134,000 |  |
Common stock price |  |  |  |  |  | $ 1.25 |  |
Proceeds from warrants exercised |  |  |  |  | $ 100,000 | $ 167,500 |  |
2007 Plan [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Number of common shares available to be purchased through options, issued and outstanding | 10,000,000 |  | 10,000,000 |  | 4,520,000 |  |  |
Number of shares authorized under plan | 4,450,000 |  | 4,450,000 |  | 10,000,000 |  |  |
2016 Plan [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Number of common shares available to be purchased through options, issued and outstanding | 3,178,750 |  | 3,178,750 |  | 2,235,000 |  |  |
Number of shares authorized under plan |  |  |  |  | 3,000,000 |  |  |
Common stock remain available for grants | 4,821,250 |  | 4,821,250 |  | 755,000 |  |  |
Exercisable period |  |  | 10 years |  | 10 years |  |  |
2006 Plan [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Number of shares authorized under plan |  |  |  |  |  |  | 8,000,000 | 3,000,000

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- Definition For each plan, identification of the award pricing model or other valuation method used in calculating the weighted average fair values disclosed. The model is also used to calculate the compensation expense that is shown within the balance sheet, income statement, and cash flow. Examples of valuation techniques are lattice models (binomial model), closed-form models (Black-Scholes-Merton formula), and a Monte Carlo simulation technique. Fair value is the amount at which an asset or liability could be bought or incurred or sold or settled in a current transaction between willing parties, that is, other than in a forced or liquidation sale. May include disclosures about the assumptions underlying application of the method selected. + 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)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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