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STOCKHOLDERS' EQUITY (Preferred Stock Series A) (Details) |  |  |  |  |  | 1 Months Ended | 12 Months Ended |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 06, 2016 $ / shares | Jul. 07, 2015 $ / shares shares | Jan. 24, 2013 shares | Feb. 02, 2012 USD ($) $ / shares | Dec. 29, 2010 USD ($) $ / shares shares | Jan. 31, 2014 | Nov. 30, 2011 USD ($) | Dec. 31, 2016 USD ($) Director $ / shares shares | Dec. 31, 2014 $ / shares | Dec. 31, 2015 $ / shares shares | Jun. 30, 2015 $ / shares | Feb. 27, 2015 $ / shares | Jan. 15, 2015 $ / shares | Oct. 22, 2014 $ / shares | Oct. 21, 2014 $ / shares | Jan. 31, 2013 $ / shares
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares authorized |  |  |  |  |  |  |  | 15,000,000 |  | 15,000,000 |  |  |  |  |  |
Private placement, net, shares |  | 1,500,000 | 1,383,333 |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock warrant, exercise price (in usd per share) | $ / shares |  | $ 6.50 |  | $ 15.00 |  |  |  | $ 10.25 | $ 10.86 | $ 10.25 | $ 7.56 | $ 7.56 | $ 9.59 | $ 10.86 | $ 11.73 | $ 12.96
Proceeds from issuance of common stock and convertible notes | $ |  |  |  |  | $ 6,000,000 |  |  |  |  |  |  |  |  |  |  |
Stock issuance costs | $ |  |  |  | $ 1,330,000 |  |  |  | $ 219,000 |  |  |  |  |  |  |  |
Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of directors | Director |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |
Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Private placement, net, shares |  |  |  |  |  |  |  | 1,320,002 |  |  |  |  |  |  |  |
Preferred stock revaluation | $ |  |  |  |  |  |  | $ 300,000 |  |  |  |  |  |  |  |  |
Series A Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock warrant, exercise price (in usd per share) | $ / shares | $ 1.00 |  |  |  | $ 2.32 |  |  |  |  |  |  |  |  |  |  |
Convertible notes, common stock callable (in shares) |  |  |  |  | 1,293,102 |  |  |  |  |  |  |  |  |  |  |
Stock issuance costs | $ |  |  |  |  | $ 200,000 |  |  |  |  |  |  |  |  |  |  |
Series A Preferred Stock | Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares authorized |  |  |  |  |  |  |  | 3,879,307 |  |  |  |  |  |  |  |
Private placement, net, shares |  |  |  |  | 2,586,205 |  |  |  |  |  |  |  |  |  |  |
Common stock warrant, exercise price (in usd per share) | $ / shares |  |  |  |  | $ 2.32 |  |  |  |  |  |  |  |  |  |  |
Conversion ratio | 333.000 |  |  |  |  | 0.3333 |  |  | 4 |  |  |  |  |  |  |
Preferred stock, dividend rate, percentage |  |  |  |  |  |  |  | 10.00% |  |  |  |  |  |  |  |
Preferred stock, dividend rate, compound percentage maximum |  |  |  |  |  |  |  | 50.00% |  |  |  |  |  |  |  |

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