CONSOLIDATED STATEMENTS OF CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY (DEFICIT) - Temporary Equity - 12 months ended Dec. 31, 2018 - USD ($) $ in Thousands	Convertible preferred stock	Total
Balance, beginning at Dec. 31, 2017	$ 109,232
Balance, beginning (in shares) at Dec. 31, 2017	43,135,911
Convertible preferred equity
Conversion of convertible preferred stock into common stock	$ (109,232)	$ 109,232
Conversion of convertible preferred stock into common stock (in shares)	(43,135,911)
Balance, end at Dec. 31, 2018	$ 0
Balance, end (in shares) at Dec. 31, 2018	0