CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Preferred stock, shares authorized	79,398,350	79,398,350
Preferred stock, shares issued	59,398,350	59,398,350
Preferred stock, shares outstanding	59,398,350	59,398,350
Preferred stock, liquidation value	$ 188,034	$ 188,034
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	90,000,000	90,000,000
Common stock, shares issued	6,559,348	6,502,929
Common stock, shares outstanding	2,801,859	2,099,740
Series B Preferred Stock
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	14,877,697	14,877,697
Preferred stock, shares issued	14,877,697	14,877,697
Preferred stock, shares outstanding	14,877,697	14,877,697
Preferred stock, liquidation value	$ 121,253	$ 121,253
Series A Preferred Stock
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	64,520,653	64,520,653
Preferred stock, shares issued	44,520,653	44,520,653
Preferred stock, shares outstanding	44,520,653	44,520,653
Preferred stock, liquidation value	$ 66,800	$ 66,800