Consolidated Statements of Changes in Convertible Preferred Stock and Stockholders' Equity (Deficit) (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Series D Preferred Stock [Member]
Costs Of Issuance Preferred Stock		$ 142
Series E Preferred Stock [Member]
Costs Of Issuance Preferred Stock		$ 184
Series E1 Preferred Stock [Member]
Costs Of Issuance Preferred Stock	$ 136