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CONSOLIDATED BALANCE SHEETS (PARENTHETICAL) - ₪ / shares
Dec. 31, 2018
Dec. 31, 2017
Statement of Financial Position [Abstract]    
Ordinary shares, par value per share ₪ 0.9 ₪ 0.9
Ordinary shares, shares authorized 13,000,000 10,000,000
Ordinary shares, shares issued 9,149,169 9,122,501
Ordinary shares, shares outstanding 8,874,696 8,848,028
Treasury shares, shares 274,473 274,473