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SUBSEQUENT EVENTS (Details) - USD ($) |  |  |  |  |  | 3 Months Ended | 12 Months Ended |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 06, 2016 | Jul. 07, 2015 | Jan. 24, 2013 | Feb. 02, 2012 | Dec. 29, 2010 | Mar. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Jun. 30, 2015 | Feb. 27, 2015 | Jan. 15, 2015 | Oct. 22, 2014 | Oct. 21, 2014 | Jan. 27, 2014 | Jan. 31, 2013
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, par value (in usd per share) |  |  |  |  |  |  |  | $ 0.01 | $ 0.01 |  |  |  |  |  |  |
Common stock, par value (in usd per share) | [1] |  |  |  |  |  |  | $ 0.01 | $ 0.01 |  |  |  |  |  | $ 0.01 |
Preferred stock, shares outstanding |  |  |  |  |  |  |  | 4,029,502 | 4,029,502 |  |  |  |  |  |  |
Number of common stock issued to Preferred Holders |  |  | 1,500,000 | 1,383,333 |  |  |  |  |  |  |  |  |  |  |  |
Promissory note converted |  |  |  |  |  |  |  | $ 1,012,000 | $ 0 |  |  |  |  |  |  |
Preferred stock, shares issued |  |  |  |  |  |  |  | 4,029,502 | 4,029,502 |  |  |  |  |  |  |
Common stock warrant, common stock called (in shares) |  |  | 2,188,177 | 691,656 | 948,333 |  |  | 1,387,685 | 1,387,685 | 1,881,396 | 1,881,396 | 1,483,161 | 1,309,785 | 1,212,665 |  | 1,097,600
Common stock warrant, exercise price (in usd per share) |  |  | $ 6.50 |  | $ 15.00 |  |  | $ 10.25 | $ 10.25 | $ 7.56 | $ 7.56 | $ 9.59 | $ 10.86 | $ 11.73 |  | $ 12.96
Share price (in usd per share) |  |  | 1.42 | $ 6.00 |  |  |  | $ 1.07 |  |  |  |  |  |  |  |
Stock issuance costs |  |  |  |  | $ 1,330,000 |  |  |  |  |  |  |  |  |  |  |
Payments of stock issuance costs, percentage of gross offering proceeds |  |  |  |  | 7.00% |  |  |  |  |  |  |  |  |  |  |
Common stock warrants term |  |  |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |
Payments of stock issuance costs, warrant right to purchase common stock shares |  |  |  |  | 31,666 |  |  |  |  |  |  |  |  |  |  |
Stock issuance costs, reimbursable expenses |  |  |  |  | $ 125,000 |  |  |  |  |  |  |  |  |  |  |
Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, par value (in usd per share) |  | $ 0.01 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of common stock issued pursuant to the accrued and unpaid dividends on preferred stocks |  | 4,474,825 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of common stock issued to Preferred Holders |  | 6,780,179 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Series A Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares outstanding |  |  |  |  |  |  |  | 2,586,205 |  |  |  |  |  |  |  |
Common stock warrant, exercise price (in usd per share) |  |  |  |  |  | $ 2.32 |  |  |  |  |  |  |  |  |  |
Stock issuance costs |  |  |  |  |  | $ 200,000 |  |  |  |  |  |  |  |  |  |
Series A Preferred Stock | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, par value (in usd per share) |  | $ 0.01 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock dividends rate per share of common stock (in dollars per share) |  | $ 1.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion ratio |  | 0.3333 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares outstanding |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares of common stock issued from preferred stock conversion |  | 862,057 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of preferred stock accrued and unpaid dividends |  | $ 3,681,591.90 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of common stock issued pursuant to the accrued and unpaid dividends on preferred stocks |  | 3,681,590 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Series A-1 Convertible Preferred Stock and Warrants | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of convertible preferred stock |  | $ 2,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares issued, price per share |  | $ 0.93 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Series B Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares outstanding |  |  |  |  |  |  |  | 1,443,297 |  |  |  |  |  |  |  |
Series B Preferred Stock | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, par value (in usd per share) |  | 0.01 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock dividends rate per share of common stock (in dollars per share) |  | $ 1.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion ratio |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares outstanding |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares of common stock issued from preferred stock conversion |  | 1,443,297 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of preferred stock accrued and unpaid dividends |  | $ 793,236.17 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of common stock issued pursuant to the accrued and unpaid dividends on preferred stocks |  | 793,235 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Series A-1 Convertible Preferred Stock | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, par value (in usd per share) |  | $ 0.01 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion ratio |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares issued |  | 2,365,243 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of preferred shares per one vote |  | 1.075269 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of common stock issued to Preferred Holders | [2] |  |  |  |  |  |  | 5,047,411 | 730,776 |  |  |  |  |  |  |
Common Stock | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares of common stock issued from preferred stock conversion |  | 2,305,354 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible Promissory Note |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  | $ 750,000 | $ 750,000 |  |  |  |  |  |  |
Convertible Promissory Note | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Promissory note converted |  |  |  |  |  |  | $ 200,000 |  |  |  |  |  |  |  |  |
Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock warrant, common stock called (in shares) |  |  |  |  | 823,333 |  |  |  |  |  |  |  |  |  |  |
Craig-Hallum Capital Group LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock warrant, exercise price (in usd per share) |  |  | $ 1.66 |  |  |  |  |  |  |  |  |  |  |  |  |
Stock issuance costs |  |  | $ 212,783 |  |  |  |  |  |  |  |  |  |  |  |  |
Payments of stock issuance costs, percentage of gross offering proceeds |  |  | 7.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock warrants term |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |  |
Payments of stock issuance costs, warrant right to purchase common stock shares |  |  | 107,033 |  |  |  |  |  |  |  |  |  |  |  |  |
Stock issuance costs, reimbursable expenses |  |  | $ 50,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Craig-Hallum Capital Group LLC | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock warrant, exercise price (in usd per share) |  | $ 1.21 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock issuance costs |  | $ 140,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments of stock issuance costs, percentage of gross offering proceeds |  | 7.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of warrants |  | $ 50 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock warrants term |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments of stock issuance costs, warrant right to purchase common stock shares |  | 107,527 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock issuance costs, reimbursable expenses |  | $ 50,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Series A-1 Warrant | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock warrant, common stock called (in shares) |  | 1,773,929 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Period in which warrants can be exercised |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock warrant, exercise price (in usd per share) |  | $ 1.21 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants aggregate exchange amount |  | $ 1,436,882 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrant exercise period not subject to cash payment to Warrant holder |  | 90 days |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrant exchange price calculation threshold |  | $ 0.50 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Series A-1 Warrant | Maximum | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock warrant, common stock called (in shares) |  | 2,873,765 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Series A-1 Warrant | Pro Forma | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants aggregate exchange amount |  | $ 1,436,882 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share price (in usd per share) |  | $ 0.25 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments for additional shares beyond the Required Approvals shares |  | $ 718,441 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Series A-1 Warrant | Pro Forma | Maximum | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock warrant, common stock called (in shares) |  | 2,873,765 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Series A Warrants |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock warrants term |  |  | 5 years 6 months |  |  |  |  |  |  |  |  |  |  |  |  |
Series A Warrants | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants aggregate exchange amount |  | $ 941,197 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrant exercise period not subject to cash payment to Warrant holder |  | 90 days |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrant exchange price calculation threshold |  | $ 0.50 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Series A Warrants | Maximum | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock warrant, common stock called (in shares) |  | 1,161,972 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Series A Warrants | Pro Forma | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants aggregate exchange amount |  | $ 941,197 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share price (in usd per share) |  | $ 0.25 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments for additional shares beyond the Required Approvals shares |  | $ 470,599 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Series A Warrant, Cashless Exchange | Maximum | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock warrant, common stock called (in shares) |  | 1,882,395 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Series A Warrant, Cashless Exchange | Pro Forma | Maximum | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock warrant, common stock called (in shares) |  | 1,882,395 |  |  |  |  |  |  |  |  |  |  |  |  |  |
[1] | The common stock shares and additional paid-in capital for all periods presented reflect the one-for-twelve reverse stock split which took effect on January 27, 2014.
[2] | The common stock shares and additional paid-in capital for all periods presented reflect the one-for-twelve reverse stock split which took effect on January 27, 2014.

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