June 2012 Stock Sale	12 Months Ended
Dec. 31, 2013
Equity [Abstract]
June 2012 Stock Sale	June 2012 Stock Sale On May 30, 2012, the Company executed a common stock purchase agreement (the "Stock Purchase Agreement") with Piper Jaffray & Co. ("Piper"). As part of the Stock Purchase Agreement (pursuant to a shelf registration statement filed with the SEC on May 30, 2012, which became effective immediately upon filing), Piper purchased 2.7 million shares of the Company's common stock at $13.00 per share on June 5, 2012, and subsequently executed an option to purchase an additional 0.4 million shares at $13.00 per share, which closed on June 7, 2012. These two transactions resulted in gross proceeds to the Company of $40.3 million (net of $0.1 million withheld by Piper to cover their applicable legal fees). The Company's direct costs to complete this transaction, substantially consisting of legal fees and accounting fees, totaled $0.2 million and are reflected as a reduction of "additional paid-in capital" in the accompanying Consolidated Balance Sheets as of December 31, 2013.

June 2012 Stock Sale

On May 30, 2012, the Company executed a common stock purchase agreement (the "Stock Purchase Agreement") with Piper Jaffray & Co. ("Piper"). As part of the Stock Purchase Agreement (pursuant to a shelf registration statement filed with the SEC on May 30, 2012, which became effective immediately upon filing), Piper purchased 2.7 million shares of the Company's common stock at $13.00 per share on June 5, 2012, and subsequently executed an option to purchase an additional 0.4 million shares at $13.00 per share, which closed on June 7, 2012.

These two transactions resulted in gross proceeds to the Company of $40.3 million (net of $0.1 million withheld by Piper to cover their applicable legal fees). The Company's direct costs to complete this transaction, substantially consisting of legal fees and accounting fees, totaled $0.2 million and are reflected as a reduction of "additional paid-in capital" in the accompanying Consolidated Balance Sheets as of December 31, 2013.