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SHAREHOLDERS' EQUITY (Details) (USD $) | 0 Months Ended | 12 Months Ended | 2 Months Ended |  | 0 Months Ended | 12 Months Ended |  |  | 0 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 11, 2011 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Jul. 31, 2010 Public offering item | Dec. 31, 2012 May 2008 equity infusion | Oct. 31, 2011 BTIG ATM Sales Agreement | Dec. 31, 2012 BTIG ATM Sales Agreement | Dec. 31, 2011 BTIG ATM Sales Agreement | Dec. 31, 2011 BTIG ATM Sales Agreement Maximum | Oct. 31, 2011 BTIG ATM Sales Agreement Maximum | Sep. 05, 2012 RCF Private placement | Mar. 09, 2012 RCF Private placement
SHAREHOLDERS' EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate offering price of the shares of common stock available to be sold under ATM Sales Agreement |  |  |  |  |  |  |  | $ 9,000,000 |  | $ 15,000,000 | $ 15,000,000 |  |
Percentage of commission to be paid on the gross proceeds from the sale of shares under ATM Sales Agreement |  |  |  |  |  |  | 3.00% |  |  |  |  |  |
Gross proceeds from sale of shares of common stock |  | 20,264,692 | 352,855 | 19,138,091 | 19,100,000 |  |  | 5,400,000 | 325,000 |  |  |  |
Shares of common stock sold |  |  |  |  | 3,540,000 |  |  | 973,000 | 47,700 |  |  |  |
Shares of common stock sold under private placement |  |  |  |  |  |  |  |  |  |  |  | 970,000 | 1,000,000
Proceeds from sale of shares of common stock |  |  |  |  |  |  |  |  |  |  |  | $ 5,000,000 | $ 10,000,000
Price per share under private placement (in dollars per share) | $ 8.00 |  |  |  |  |  |  |  |  |  |  | $ 5.16 | $ 9.75
Number of underwritten public offerings |  |  |  |  | 2 |  |  |  |  |  |  |  |
Warrants |  |  |  |  |  |  |  |  |  |  |  |  |
Shares of common stock that can be purchased upon exercise of warrants |  |  |  |  |  | 990,000 |  |  |  |  |  |  |
Exercise price of warrants (in dollars per share) |  |  |  |  |  | $ 57.80 |  |  |  |  |  |  |
Deferred Compensation |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum percentage of compensation permitted to be deferred for the years 1999 through 2004 | 100.00% |  |  |  |  |  |  |  |  |  |  |  |
Restricted stock issued in lieu of the cash due under the deferred compensation plans (in shares) | 88,500 |  |  |  |  |  |  |  |  |  |  |  |

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