Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Redeemable common stock, redemption value	$ 2,240,000	$ 2,240,000
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	12,102,498	12,093,834
Common stock, shares outstanding	12,102,498	12,093,834
Common stock subscribed and not yet issued	0	8,664
Series A Redeemable Convertible Preferred Stock [Member]
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	100,000	100,000
Preferred stock, shares outstanding	100,000	100,000
Accrued and undeclared dividends	$ 80	$ 41
Preferred stock, liquidation preference	$ 380	$ 341
Series B Redeemable Convertible Preferred Stock [Member]
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	3,075,000	3,075,000
Preferred stock, shares issued	2,050,000	2,050,000
Preferred stock, shares outstanding	2,050,000	2,050,000
Accrued and undeclared dividends	$ 165	$ 0
Preferred stock, liquidation preference	$ 6,315	$ 0