Taxes on Income - Schedule of Deferred Income Tax (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Allowance for doubtful accounts	$ 3	$ 3
Allowance for bonus		54
Provision for vacation and recreation pay	38	37
R&D expenses	339	289
Share-based compensation	2,581	2,577
Carry forward tax losses	24,643	24,245
Accrued severance pay, net	36	35
Deferred tax assets noncurrent	27,640	27,240
Less-valuation allowance	(27,640)	(27,240)	$ (29,682)
Deferred tax assets