Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2018	Dec. 31, 2017
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	200,000,000	243,160,120
Common stock, shares issued	10,032,687	77,257
Common stock, shares outstanding	10,032,687	77,257
Series A Convertible Preferred Stock
Convertible preferred stock, par value	$ 0.0001	$ 0.0001
Convertible preferred stock, shares authorized	0	418,767
Convertible preferred stock, shares issued	0	345,587
Convertible preferred stock, shares outstanding	0	345,587
Series B Convertible Preferred Stock
Convertible preferred stock, par value	$ 0.0001	$ 0.0001
Convertible preferred stock, shares authorized	0	8,101,042
Convertible preferred stock, shares issued	0	8,058,170
Convertible preferred stock, shares outstanding	0	8,058,170
Series B-1 Convertible Preferred Stock
Convertible preferred stock, par value	$ 0.0001	$ 0.0001
Convertible preferred stock, shares authorized	0	7,523,734
Convertible preferred stock, shares issued	0	3,437,950
Convertible preferred stock, shares outstanding	0	3,437,950
Series C Convertible Preferred Stock
Convertible preferred stock, par value	$ 0.0001	$ 0.0001
Convertible preferred stock, shares authorized	0	23,357,047
Convertible preferred stock, shares issued	0	23,357,047
Convertible preferred stock, shares outstanding	0	23,357,047
Series D Convertible Preferred Stock
Convertible preferred stock, par value	$ 0.0001	$ 0.0001
Convertible preferred stock, shares authorized	0	52,835,720
Convertible preferred stock, shares issued	0	20,652,486
Convertible preferred stock, shares outstanding	0	20,652,486
Series D-1 Convertible Preferred Stock
Convertible preferred stock, par value	$ 0.0001	$ 0.0001
Convertible preferred stock, shares authorized	0	125,808,667
Convertible preferred stock, shares issued	0	66,141,257
Convertible preferred stock, shares outstanding	0	66,141,257

Face amount or stated value per share of common stock.

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