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STOCKHOLDERS' EQUITY (Details Textual) - USD ($) |  | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Oct. 12, 2017 | Jul. 31, 2018 | Jul. 16, 2018 | Dec. 31, 2018 | Dec. 31, 2017 | Sep. 12, 2017 | Aug. 31, 2014
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues |  | 1,355,000 |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights |  |  |  | 5,318,747 |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights |  | $ 4.00 |  |  |  |  |
Common Stock, Shares Authorized |  |  |  | 80,000,000 | 80,000,000 |  |
Convertible Preferred Stock, Shares Issued upon Conversion |  | 2,785,000 |  |  |  |  |
Stock Issued During Period, Value, New Issues |  |  |  | $ 15,025,078 | $ 7,054,865 |  |
Stock Issued During Period On Exercise Of Warrants, Value |  |  |  |  | 2,963,259 |  |
Proceeds from Warrant Exercises |  |  |  | $ 0 | 2,963,259 |  |
Stockholders' Equity, Reverse Stock Split |  |  | At a special meeting held on July 12, 2018, our stockholders approved an amendment to our certificate of incorporation to affect a reverse split of our common stock at a ratio between 1:5 to 1:10 and authorized the Board to determine the ratio at which the reverse split would be. The Board authorized the ratio of the reverse split, and effective at the close of business on July 16, 2018, the Company implemented a 1-for-10 reverse stock split of its outstanding common stock. The accompanying consolidated financial statements and accompanying notes to the consolidated financial statements give retroactive effect to the reverse stock split for all periods presented. The shares of common stock that the Company is authorized to issue remains unchanged at 80,000,000 and the par value remains at $0.00001 per share. Accordingly, stockholders' equity reflects the reverse stock split by reclassifying from common stock to additional paid-in capital an amount equal to the par value of the decreased shares resulting from the reverse stock split. |  |  |  |
Share Price |  | $ 4.00 |  |  |  |  |
Proceeds from Issuance or Sale of Equity |  | $ 16,560,000 |  |  |  |  |
Class of Warrant or Right, Date from which Warrants or Rights Exercisable |  | Jul. 31, 2023 |  |  |  |  |
Net Proceeds from Issuance or Sale of Equity After Deducting Underwriting Discounts and Commissions and Related Offering Expenses |  | $ 15,000,000 |  |  |  |  |
Stock Issued During Period, Value, Stock Options Exercised |  |  |  |  | $ 0 |  |
Warrant [Member] |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights |  | 4,140,000 |  |  |  |  |
Series B Preferred Stock [Member] |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |
Convertible Preferred Stock, Shares Issued upon Conversion |  |  |  |  | 122,751 |  |
Conversion of Stock, Shares Converted |  |  |  | 18 | 23 |  |
Preferred Stock, Shares Outstanding |  |  |  | 0 | 18 |  |
Preferred Stock Convertible Beneficial Conversion Feature |  |  |  | $ 1,448,945 |  |  |
Convertible Preferred Stock, Shares Issuable upon Conversion |  |  |  | 96,284 |  |  |
Series C Preferred Stock [Member] |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues |  | 1,114 |  |  |  |  |
Preferred Stock, Shares Outstanding |  |  |  | 473 | 0 |  |
Preferred Stock Convertible Beneficial Conversion Feature |  |  |  | $ 2,241,795 |  |  |
Convertible Preferred Stock, Terms of Conversion |  | Series C Preferred Stock, each of which is convertible into 2,500 shares of Common Stock​​​​​​​, together with a Series E warrant to purchase 2,500 shares of common stock |  |  |  |  |
Share Price |  | $ 10,000 |  |  |  |  |
Stock Issued During Period, Value, Stock Options Exercised |  |  |  | $ 641 |  |  |
October 2017 Registered public offering [Member] |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |
Stock Issued During Period, Value, New Issues | $ 7,760,000 |  |  |  |  |  |
October 2017 Registered public offering [Member] | Series B Preferred Stock [Member] |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues | 41.0412949 |  |  |  |  |  |
Shares Issued, Price Per Share | $ 100,000 |  |  |  |  |  |
Convertible Preferred Stock, Shares Issued upon Conversion | 5,337 |  |  |  |  |  |
Convertible Preferred Stock, Total Number of Shares Issued upon Conversion | 219,037 |  |  |  |  |  |
August 2014 Underwritten Offering [Member] |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights |  |  |  |  |  |  | 970
Common Stock [Member] |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues |  |  |  | 1,355,000 | 195,438 |  |
Common Stock, Shares Authorized |  |  |  |  | 80,000,000 | 40,000,000 |
Stock Issued During Period, Value, New Issues |  |  |  | $ 14 | $ 2 |  |
Preferred Stock, Shares Outstanding |  |  |  | 1,602,500 |  |  |
Stock Issued During Period On Exercise Of Warrants, Value |  |  |  |  | 2 |  |
Stock Issued During Period, Value, Stock Options Exercised |  |  |  |  | $ 0 |  |
Common Stock [Member] | October 2017 Registered public offering [Member] |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues | 195,438 |  |  |  |  |  |
Convertible Preferred Stock Conversion Price | $ 18.7375 |  |  |  |  |  |
Series D Warrants [Member] | October 2017 Registered public offering [Member] |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | 310,856 |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ 17.80 |  |  |  |  |  |
Stock Issued During Period On Exercise Of Warrants, Value | $ 7,800,000 |  |  |  |  |  |
Common Stock, Conversion Basis | 0.75 |  |  |  |  |  |
Proceeds from Warrant Exercises | $ 7,100,000 |  |  |  |  |  |

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