Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Commitments and Contingent Liabilities (Details)

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Commitments and Contingent Liabilities (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]      
Maturity date February 28, 2024    
Expenses for lease of facilities $ 283 $ 237 $ 236
Research and development in process $ 4,382    
Pay royalties 3.00%    
Maximum aggregate royalties paid 100.00%