Agreements	9 Months Ended
Sep. 30, 2011
Agreements [Abstract]
Agreements	6. Agreements In July 2010, the Company entered into an “at the market” equity offering sales agreement with MLV, pursuant to which it may issue and sell shares of its common stock from time to time through MLV acting as its sales agent and underwriter. Sales of the Company’s common stock through MLV are made on the Company’s principal trading market by means of ordinary brokers’ transactions at market prices, in block transactions or as otherwise agreed by MLV and the Company. MLV uses its commercially reasonable efforts to sell the Company’s common stock from time to time, based upon instructions from the Company (including any price, time or size limits the Company may impose). The Company has paid MLV a commission rate of up to 7.0% of the gross sales price per share of any common stock sold through MLV as agent under the sales agreement. The Company has also provided MLV with customary indemnification rights.

Agreements

9 Months Ended

Sep. 30, 2011

6. Agreements

In July 2010, the Company entered into an “at the market” equity offering sales agreement with MLV, pursuant to which it may issue and sell shares of its common stock from time to time through MLV acting as its sales agent and underwriter. Sales of the Company’s common stock through MLV are made on the Company’s principal trading market by means of ordinary brokers’ transactions at market prices, in block transactions or as otherwise agreed by MLV and the Company. MLV uses its commercially reasonable efforts to sell the Company’s common stock from time to time, based upon instructions from the Company (including any price, time or size limits the Company may impose). The Company has paid MLV a commission rate of up to 7.0% of the gross sales price per share of any common stock sold through MLV as agent under the sales agreement. The Company has also provided MLV with customary indemnification rights.