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Supplementary Balance Sheet Information (Details 3) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Accounts payable and accruals - other:    
Payroll and related expenses $ 702 $ 964
Government institutions 348 1,166
Accrued vacation pay 67 63
Accrued expenses and sundry 116 71
Accounts payable and accruals - other $ 1,233 $ 2,264