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Interim Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - shares
Mar. 31, 2020
Dec. 31, 2019
Statement of Financial Position [Abstract]    
Common stock, shares authorized 15,000,000 15,000,000
Common stock, shares issued 7,921,291 7,910,804
Common stock, shares outstanding 7,921,291 7,910,804
Common stock, shares held in Rabbi Trust 44,687 27,069