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Subsequent Events	6 Months Ended
Subsequent Events	Jun. 30, 2018
Subsequent Events [Abstract]
Subsequent Events	8.SUBSEQUENT EVENTS On August 3, 2018, the Company completed an underwritten public offering of 2,555,555 shares of common stock, including 333,333 shares sold pursuant to the underwriters’ full exercise of their option to purchase additional shares to cover over-allotments, at a public offering price of $18.00 per share. The Company received aggregate net proceeds of approximately $42.5 million, after deducting underwriting discounts, commissions and offering-related expenses of approximately $3.5 million.