Stock-based Compensation (Details) - Schedule of stock-based compensation expense - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Stock-based Compensation (Details) - Schedule of stock-based compensation expense [Line Items]
Total stock-based compensation expense	$ 182	$ 140	$ 337	$ 291
Research and development [Member]
Stock-based Compensation (Details) - Schedule of stock-based compensation expense [Line Items]
Total stock-based compensation expense		2	2	5
Selling, general and administrative [Member]
Stock-based Compensation (Details) - Schedule of stock-based compensation expense [Line Items]
Total stock-based compensation expense	$ 182	$ 138	$ 335	$ 286