Significant Accounting Policies (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Accounting Policies [Abstract]
Short-term investments	$ 500,000	$ 152,000
Restricted long-term amount	3,961,000
Research and development expenses	$ 2,189	1,204
Severance pay percentage	8.33%
Severance costs	$ 2,148	2,191
Accrued severance pay	2,396	2,426
Severance expense	$ 427	$ 12
Tax benefit	50.00%