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Commitments and Contingent Liabilities (Details)
€ in Thousands, $ in Thousands
12 Months Ended
Jan. 09, 2020
EUR (€)
Sep. 30, 2017
Dec. 22, 2016
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Commitments and Contingencies Disclosure [Abstract]            
Advance payments       $ 75    
Rental and lease expenses       1,035 $ 1,027 $ 1,073
Participation payments       $ 5,139    
Commitments and Contingent liabilities, description   In September 2017, a suit was filed against the Company in the Tel-Aviv Magistrates Court in an amount of $250.   the Company is committed to pay royalties at a rate of 3% of sales of the developed products, up to 100% of the amount of grants received plus interest at LIBOR rate. Through December 31, 2020, no royalties have been paid or accrued.    
Finder's fee     $ 250      
Automatic filing machine (in Euro) | € € 250          
Pre-payment for automatic filing machine (in Euro) | € € 372