Taxes on Income - Schedule of Deferred Income Tax (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Allowance for bonus	$ 2	$ 57
Provision for vacation and recreation pay	63	35
R&D expenses	578	589
Operating lease right of use assets	(291)	(215)
Operating lease liabilities	322	233
Share-based compensation	2,669	2,596
Carry forward tax losses	31,759	27,854
Accrued severance pay, net	43	32
Deferred tax assets noncurrent	35,145	31,181
Less-valuation allowance	(35,145)	(31,181)	$ (27,640)
Deferred tax assets