TAXES ON INCOME (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Line Items]
Statutory income tax rate	21.00%	35.00%
Net operating loss carry forwards	$ 213.1
Effective Income Tax Rate Reconciliation, Limitation of Net Operating Lost Deduction	80.00%
Effective Income Tax Rate Reconciliation, The Maximum Percentage of Interest	30.00%
Restricted Amount [Member]
Income Tax Disclosure [Line Items]
Net operating loss carry forwards	$ 29.0	$ 26.0
Protalix Ltd. [Member]
Income Tax Disclosure [Line Items]
Statutory income tax rate	23.00%
Net operating loss carry forwards	$ 184.1	$ 185.0
Protalix Ltd. [Member] | Scenario, Plan [Member]
Income Tax Disclosure [Line Items]
Statutory income tax rate	23.00%
Protalix Ltd. [Member] | Law for Amending the Israel Income Tax Ordinance, Tax Thereafter [Member]
Income Tax Disclosure [Line Items]
Statutory income tax rate		23.00%	24.00%
Minimum [Member] | Protalix Ltd. [Member]
Income Tax Disclosure [Line Items]
Statutory income tax rate		23.00%
Maximum [Member]
Income Tax Disclosure [Line Items]
Statutory income tax rate	27.00%
Maximum [Member] | Protalix Ltd. [Member]
Income Tax Disclosure [Line Items]
Statutory income tax rate			25.00%