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STOCKHOLDERS' EQUITY (Details) |  |  |  |  |  |  | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | ---
Nov. 23, 2016 USD ($) $ / shares shares | Nov. 01, 2016 $ / shares shares | Jul. 31, 2015 USD ($) Director $ / shares shares | May 11, 2015 USD ($) $ / shares shares | Apr. 23, 2015 USD ($) $ / shares shares | Dec. 24, 2014 $ / shares shares | Jun. 30, 2015 USD ($) $ / shares | Dec. 31, 2016 USD ($) $ / shares shares | Dec. 31, 2015 USD ($) $ / shares
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |  |  |  |
Proceeds from Warrant Exercises | $ |  |  |  |  |  |  |  | $ 4,635,000 | $ 0 | $ 4,635,000
Underwritten public offering (in shares) | shares |  |  |  |  |  |  | 3,500,000 |  |  |
Warrants issued price (in dollars per share) | $ / shares |  |  |  |  |  |  | $ 0.01 |  |  |
Warrants Outstanding (in shares) | shares |  |  |  |  |  |  |  |  | 3,736,617 |
Exercise Price (in dollars per share) | $ / shares |  |  |  |  |  |  |  | $ 5.00 | $ 5.00 | $ 5.00
Common Stock [Member] |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |  |  |  |
Common stock price per share (in dollars per share) | $ / shares |  | $ 7.00 | $ 7.00 |  |  |  |  |  |  |
Underwritten public offering (in shares) | shares |  | 293,889 | 6,000,000 |  |  |  |  |  |  |
Gross proceeds from offering | $ |  | $ 44,057,000 |  |  |  |  |  |  |  |
Direct Placement [Member] |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |  |  |  |
Proceed from sale of stock from private placement | $ |  |  |  | $ 15,500,000 |  |  |  |  |  |
Number of board of directors | Director |  |  |  | 2 |  |  |  |  |  |
Common stock price per share (in dollars per share) | $ / shares |  |  |  | $ 5.50 |  |  |  |  |  |
Underwritten public offering (in shares) | shares |  |  |  | 2,830,000 |  |  |  |  |  |
Private Placement [Member] |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |  |  |  |
Proceed from sale of stock from private placement | $ |  |  |  |  | $ 10,000,000 | $ 7,000,000 |  |  |  |
Common stock price per share (in dollars per share) | $ / shares |  |  |  |  | $ 8.00 | $ 3.00 |  |  |  |
Underwritten public offering (in shares) | shares |  |  |  |  | 1,250,000 | 2,333,333 |  |  |  |
Warrant issued (in shares) | shares |  |  |  |  | 625,000 |  |  |  |  |
Exercise Price (in dollars per share) | $ / shares |  |  |  |  | $ 10 |  |  |  |  |
Placement Agent [Member] |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |  |  |  |
Warrant issued (in shares) | shares |  |  |  |  | 50,000 |  |  |  |  |
Term of warrant |  |  |  |  | 5 years |  |  |  |  |
Exercise Price (in dollars per share) | $ / shares |  |  |  |  | $ 11.00 |  |  |  |  |
2015 July Financing [Member] |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |  |  |  |
Warrants Outstanding (in shares) | shares | [1] |  |  |  |  |  |  |  | 20,000 |
Exercise Price (in dollars per share) | $ / shares | [1] |  |  |  |  |  |  |  | $ 6.05 |
Expiration Date | [1] |  |  |  |  |  |  |  | Jul. 31, 2020 |
2015 May Financing [Member] |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |  |  |  |
Warrants Outstanding (in shares) | shares | [2] |  |  |  |  |  |  |  | 625,000 |
Exercise Price (in dollars per share) | $ / shares | [2] |  |  |  |  |  |  |  | $ 10.00 |
Expiration Date | [2] |  |  |  |  |  |  |  | Nov. 11, 2017 |
2015 May Financing Agent Warrants [Member] |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |  |  |  |
Warrants Outstanding (in shares) | shares | [2] |  |  |  |  |  |  |  | 50,000 |
Exercise Price (in dollars per share) | $ / shares | [2] |  |  |  |  |  |  |  | $ 11.00 |
Expiration Date | [2] |  |  |  |  |  |  |  | May 11, 2020 |
2014 December Financing [Member] |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |  |  |  |
Warrants Outstanding (in shares) | shares | [3] |  |  |  |  |  |  |  | 2,572,881 |
Exercise Price (in dollars per share) | $ / shares | [3] |  |  |  |  |  |  |  | $ 5.00 |
Expiration Date | [3] |  |  |  |  |  |  |  | Dec. 24, 2019 |
2014 December Financing Agent Warrants [Member] |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |  |  |  |
Warrants Outstanding (in shares) | shares | [3] |  |  |  |  |  |  |  | 68,735 |
Exercise Price (in dollars per share) | $ / shares | [3] |  |  |  |  |  |  |  | $ 5.00 |
Expiration Date | [3] |  |  |  |  |  |  |  | Dec. 18, 2019 |
2012 Series B Private Placement [Member] |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |  |  |  |  |  |
Warrants Outstanding (in shares) | shares | [4] |  |  |  |  |  |  |  | 400,001 |
Exercise Price (in dollars per share) | $ / shares | [4] |  |  |  |  |  |  |  | $ 25.00 |
Expiration Date | [4] |  |  |  |  |  |  |  | Oct. 24, 2018 |
[1] | In connection with the offering on July 31, 2015, the placement agent received warrants to purchase 20,000 share of common stock at $6.05 per share. The warrants are exercisable and expire on July 31. 2020.
[2] | In connection with the offering on May 11, 2015, warrants to purchase 625,000 shares of common stock at $10.00 per share were issued. All of the warrants exercisable and expire November 11, 2017. Also in connection with the offering on May 11, 2015, the placement agent received warrants to purchase 50,000 share of common stock at $11.00 per share. The warrants are exercisable and expire on May 11. 2020.
[3] | In connection with an offering on December 24, 2014, warrants to purchase 3,500,000 shares of common stock at $5.00 per share were purchased and issued for $0.01 per warrant. All of the warrants are exercisable immediately and expire on December 24, 2019. At December 31, 2016, 2,572,881 warrants are outstanding. Also in connection with the offering on December 24, 2014, the underwriter received warrants to purchase 68,735 shares of common stock at $5.00 per share. The warrants were exercisable on December 18, 2015 and expire on December 18, 2019.
[4] | In connection with a private placement offering on October 25, 2012, warrants to purchase 400,001 shares of common stock at $25.00 per share were issued. All of the warrants are exercisable immediately and expire on October 24, 2018.

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