Consolidated Balance Sheets (Paranthetical) - $ / shares	Dec. 31, 2019	Dec. 31, 2018
Liabilities, Convertible Preferred Stock and Stockholders' Deficit
Common stock, par value	$ 0.0003	$ 0.0003
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	31,660,709	30,708,138
Common stock, shares outstanding	31,660,709	30,708,138
Preferred Stock
Liabilities, Convertible Preferred Stock and Stockholders' Deficit
Preferred stock, par value	$ 0.0003	$ 0.0003
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0