Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Common stock, par value	$ 0.00001	$ 0.00001
Common stock, authorized	300,000,000	5,350,404
Common stock, issued	259,966	259,966
Common stock, outstanding	259,966	259,966
Series B Convertible Preferred Stock
Convertible preferred stock, par value	$ 0.00001	$ 0.00001
Convertible preferred stock, authorized	684,068	684,068
Convertible preferred stock, issued	684,068	684,068
Convertible preferred stock, outstanding	684,068	684,068
Convertible preferred stock, liquidation value	$ 16,545
Series C Convertible Preferred Stock
Convertible preferred stock, par value	$ 0.00001	$ 0.00001
Convertible preferred stock, authorized	4,133,479	4,133,479
Convertible preferred stock, issued	4,125,056	4,125,056
Convertible preferred stock, outstanding	4,125,056	4,125,056
Convertible preferred stock, liquidation value	$ 121,373
Series D Convertible Preferred Stock
Convertible preferred stock, par value	$ 0.00001	$ 0.00001
Convertible preferred stock, authorized	2,368,118	0
Convertible preferred stock, issued	2,368,118	0
Convertible preferred stock, outstanding	2,368,118	0
Convertible preferred stock, liquidation value	$ 64,284

Face amount or stated value per share of common stock.

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