Liquidity and Going Concern (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accounting Policies [Abstract]
Total cash and restricted cash	$ 5,277	$ 9,000	$ 5,277	$ 4,602
Cash	5,058	8,939	5,058
Current portion of restricted cash	158	61	158
Working capital		10,258
Net loss	$ 7,421	9,051	7,421
Net cash used in operating activities		$ 7,732	$ 6,566