CONDENSED BALANCE SHEETS (Parenthetical) - $ / shares	Jun. 30, 2020	Dec. 31, 2019
Common stock par value (in usd per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	200,000,000	200,000,000
Common stock, shares issued (shares)	35,922,916	21,018,663
Common stock, shares outstanding (in shares)	35,922,916	21,018,663
Class A-1 Convertible Preferred Stock
Preferred stock, shares issued (in shares)	$ 0.001	$ 0.001
Preferred stock, shares outstanding (in shares)		415,898
Preferred stock, shares issued (in shares)	415,898	415,898
Preferred stock, shares outstanding (in shares)	256,700	415,898
Class A-2 Convertible Preferred Stock
Preferred stock, shares issued (in shares)	$ 0.001	$ 0.001
Preferred stock, shares outstanding (in shares)	3,288,390	3,288,390
Preferred stock, shares issued (in shares)	3,288,390	3,288,390
Preferred stock, shares outstanding (in shares)	1,961,263	3,288,390

Face amount or stated value per share of common stock.

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