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Equity Distribution Agreement
9 Months Ended
Sep. 30, 2011
Equity Distribution Agreement [Abstract] 
Equity Distribution Agreement

(7) Equity Distribution Agreement

On December 8, 2009, the Company entered into an equity distribution agreement, or the Agreement, with Wedbush Securities Inc., or the Agent, under which the Company could, from time to time, offer and sell its common stock through the Agent. On April 30, 2010, the Company amended the Agreement to permit it to sell up to an aggregate of $20 million in shares, which were registered on a registration statement on Form S-3 (File No. 333-148288). In the year ended December 31, 2010, the Company sold 1,164,600 shares of common stock under this Agreement and realized $7.2 million of proceeds, net of $338,000 of offering costs. On May 23, 2011 the Company terminated this agreement. No shares of common stock were sold during 2011 under this agreement.