Basis of Presentation and Significant Accounting Policies - Schedule of Reconciliation of Beginning and Ending Level 3 Liabilities (Details) - Unobservable Inputs Level 3 [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Balance - January 1,	$ 7	$ 263
Change in fair value of warrants potentially settleable in cash (Note 10)	54	(256)
Balance at December 31,	$ 61	$ 7