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Sale of Additional Common Stock	12 Months Ended
	Dec. 31, 2015
Sale of Additional Common Stock
Sale of Additional Common Stock	6. Sale of Additional Common Stock In March 2015, we completed the sale of 8,625,000 shares of common stock which included shares we issued pursuant to our underwriters’ exercise of their over-allotment option pursuant to a follow-on offering. We received net proceeds of $115.2 million, after underwriting discounts, commissions and estimated offering expenses.

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Represents information pertaining to the sale of additional common stock

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