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Liability for Employees Right Upon Retirement (Details Narrative) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Percentage of monthly deposits on salary 8.33%  
Severance expenses $ 276 $ 197
Defined contribution plan expense 339 $ 294
2021 [Member]    
Defined contribution plan expense estimated $ 346