Consolidated Statements of Convertible Preferred Stock and Stockholders' Equity (Deficit) (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Initial public offering costs		$ 16,446
Common stock issuance cost	$ 21,786
Series B Convertible Preferred Stock
Convertible preferred stock, net of issuance cost		$ 165