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Initial Public Offering	12 Months Ended
Initial Public Offering	Dec. 31, 2015
Initial Public Offering
Initial Public Offering	5. Initial Public Offering On December 2, 2013, we commenced our initial public offering pursuant to a resigtration statement on Form S-1 that was declared effective by the SEC on December 3, 2013 and that registered an aggregate of 14,639,500 shares of our common stock for sale to the public at a price of $5.50 per share and an aggregate offering price of $80,517,250. The net offering procceds to us, after deducting underwriting discounts and commissions and offering costs, were approximately $72.5 million. Offering costs, which consisted of legal, accounting, printing and filing fees incurred in the preparation of the Company’s Registration Statement on Form S-1 as part of the Company’s IPO, have been offset against the IPO proceeds upon the completion of the offering in December 2013.