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Consolidated Balance Sheets (Parenthetical)
$ in Thousands
Dec. 31, 2018
USD ($)
shares
Dec. 31, 2018
₪ / shares
Dec. 31, 2017
USD ($)
shares
Dec. 31, 2017
₪ / shares
Statement of Financial Position [Abstract]        
Trade receivables, allowance for doubtful accounts | $ $ 31   $ 75  
Ordinary shares, par value per share | ₪ / shares   ₪ 80.00   ₪ 80.00
Ordinary shares, shares authorized 6,000,000   4,000,000  
Ordinary shares, shares issued 3,553,714   3,356,689  
Ordinary shares, shares outstanding 3,553,714   3,356,689