Subsequent Events	6 Months Ended
Jun. 30, 2012
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	13. SUBSEQUENT EVENTS During July 2012, 187,102 shares of Company common stock, for gross proceeds of approximately $0.7 million, were sold through the Company’s ATM Program. Approximately $19.3 million remains available under the ATM Program as of July 31, 2012. The Company had 30,519,319 shares of common stock issued and outstanding as of July 31, 2012. In connection with the Company’s private placement in August 2007, the Company issued 5-year warrants to purchase up to 500,041 shares of the Company’s common stock. At June 30, 2012, there were 346,781 of the 2007 warrants outstanding and exercisable at a price of $8.00 per share. On August 3, 2012, 5 years after their effective date, all 346,781 of the 2007 outstanding warrants expired.

Subsequent Events

6 Months Ended

Jun. 30, 2012

13. SUBSEQUENT EVENTS

During July 2012, 187,102 shares of Company common stock, for gross proceeds of approximately $0.7 million, were sold through the Company’s ATM Program. Approximately $19.3 million remains available under the ATM Program as of July 31, 2012. The Company had 30,519,319 shares of common stock issued and outstanding as of July 31, 2012.

In connection with the Company’s private placement in August 2007, the Company issued 5-year warrants to purchase up to 500,041 shares of the Company’s common stock. At June 30, 2012, there were 346,781 of the 2007 warrants outstanding and exercisable at a price of $8.00 per share. On August 3, 2012, 5 years after their effective date, all 346,781 of the 2007 outstanding warrants expired.