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Subsequent Events	12 Months Ended
	Dec. 31, 2016
Subsequent Events
Subsequent Events	15. Subsequent Events         In February 2017, the Company made a $3.0 million milestone payment to Vernalis pursuant to the license agreement entered into in February 2015.

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The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

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