Subsequent Event

6 Months Ended

Jun. 30, 2015

Subsequent Events [Abstract]

Subsequent Event

11. Subsequent Event

On July 29, 2015, the Company entered into an underwriting agreement (the “Underwriting Agreement”) with Stifel, Nicolaus & Company, Incorporated and Piper Jaffray & Co., as representatives of the several underwriters named therein, relating to the issuance and sale by the Company of 3,763,440 shares of its common stock (the “Offering”). The Company also granted the underwriters a 30-day option to purchase up to 564,516 additional shares of its common stock. The Offering was made pursuant to the Company’s Registration Statement on Form S-3 (File No. 333-203072), filed with the SEC on March 27, 2015 and declared effective on May 13, 2015, and a related prospectus supplement dated July 29, 2015, which was filed with the SEC on July 30, 2015. On August 4, 2015, the Company received net proceeds, from the Offering and the full exercise by the underwriters of their option to purchase additional shares, of approximately $75,060, after deducting the underwriting discounts and commissions and estimated offering expenses payable by the Company.