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v3.19.1

SUBSEQUENT EVENTS (Details Textual) - USD ($) |  |  |  | 1 Months Ended | 2 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Feb. 07, 2019 | Mar. 09, 2018 | Jul. 10, 2017 | Feb. 28, 2019 | Jan. 31, 2019 | Jan. 09, 2019 | May 31, 2018 | Feb. 28, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Aug. 23, 2018 | Nov. 30, 2017 | May 02, 2017
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights |  |  |  |  |  |  |  |  |  | 1,919,906 | 85,719 | 325,000 | 40,000
Proceeds from Stock Options Exercised |  |  |  |  |  |  |  |  | $ 20,500 | $ 0 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross |  | 60,390 | 50,000 |  |  | 298,914 | 7,050 |  |  |  |  |  |
Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights |  |  |  | 17,733 |  |  |  | 17,733 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period |  |  |  |  | 20,000 |  |  | 11,837 |  |  |  |  |
Proceeds from Stock Options Exercised |  |  |  |  | $ 19,000 |  |  |  |  |  |  |  |
Stock Issued During Period Shares Stock Warrants Exercised |  |  |  | 1,395 | 10,000 |  |  | 11,395 |  |  |  |  |
Proceeds from Warrant Exercises |  |  |  |  |  |  |  | $ 23,450 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | 28,700 |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price | $ 10.55 |  |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Share Options Vesting Terms | five years with options vesting 50% at the vesting commencement date, subject to the employee’s continuous service on the first anniversary of their date of hire (vesting commencement dates range from June 4, 2019 through January 25, 2020), and 50% vesting in eight equal quarterly installments |  |  |  |  |  |  |  |  |  |  |  |

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