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Other Receivables Short Term (Schedule of other receivables short term) (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Trade and other current receivables [abstract]    
Government authorities $ 193 $ 141
Contract asset related to BARDA 0 347
Prepaid expenses and other 457 439
Other Receivables- Short Term $ 650 $ 927