Registration statement for securities of certain foreign private issuers

Deferred Revenues (Details)

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Deferred Revenues (Details) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Deferred Revenues [Abstract]          
Contract liabilities $ 3,479   $ 3,888    
Recognized revenues $ 409 $ 398 $ 853 $ 763 $ 2,032