Consolidated Statements of Convertible Preferred Stock and Stockholders' Equity/(Deficit) (Parenthetical)

v3.10.0.1

Consolidated Statements of Convertible Preferred Stock and Stockholders' Equity/(Deficit) (Parenthetical) $ in Millions	12 Months Ended
	Dec. 31, 2017 USD ($)
Statement Of Stockholders Equity [Abstract]
Underwriting commissions and discounts	$ 3.0