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Subsequent Event	9 Months Ended
Subsequent Event	Sep. 30, 2013
Subsequent Event	12. SUBSEQUENT EVENT In October 2013, the Company issued 10,615,385 shares of common stock at $6.50 per share in an underwritten public offering, which included 1,384,615 shares issued to the underwriters upon exercise in full of their underwriters’ option. Net proceeds from the offering were approximately $64.7 million, after deducting offering expenses.