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Subsequent Event	9 Months Ended
	Sep. 30, 2017
Subsequent Events [Abstract]
Subsequent Event	Subsequent Event On October 16, 2017, pursuant to the Company's shelf registration statement on Form S-3, the Company completed an underwritten public offering of 3,530,000 shares of common stock at a public offering price of $17.00 per share for total gross proceeds of $60.0 million. Net proceeds, after deducting underwriting commissions and offering costs, were approximately $56.2 million. The Company granted the underwriters an option to purchase up to 529,500 additional shares at the public offering price, less underwriting discounts and commissions, which expires on November 10, 2017.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

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