CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Sep. 30, 2019	Dec. 31, 2018
Convertible preferred stock, shares authorized (in shares)		49,413,523
Convertible preferred stock, shares issued		40,079,567
Convertible preferred stock, shares outstanding		40,079,567
Common stock, par value (in usd per share)	$ 0.001	$ 0.001
Common stock, shares authorized	33,333,333	11,070,776
Common stock, shares issued	12,436,205	351,652
Common stock, shares outstanding	12,436,205	351,652
Convertible Preferred Stock
Convertible preferred stock, par or stated value per share (in usd per share)	$ 0.001	$ 0.001
Convertible preferred stock, shares authorized (in shares)	10,000,000	59,413,523
Convertible preferred stock, shares issued	0	40,079,567
Convertible preferred stock, shares outstanding	0	40,079,567
Redeemable Common Stock
Common stock, par value (in usd per share)	$ 0.001	$ 0.001
Common stock, shares issued	0	107,364
Common stock, shares outstanding	0	107,364

Face amount or stated value per share of common stock.

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