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TAXES ON INCOME (Narrative) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Income Tax Disclosure [Line Items]  
Withholding tax on the U.S. revenue source portion of the payments made to the Company for its share of Pfizer?s net profits 15.00%
Net operating loss carry forwards $ 72,500
Tax rates expected to be in effect when deferred tax asset differences reverse 39%, 25% and 0%
Law for Amending the Israel Income Tax Ordinance - 2009, Tax year [Member]
  
Income Tax Disclosure [Line Items]  
Statutory income tax rate 26.00%
Law for Amending the Israel Income Tax Ordinance, Tax Thereafter [Member]
  
Income Tax Disclosure [Line Items]  
Statutory income tax rate 25.00%
Restricted Amount [Member]
  
Income Tax Disclosure [Line Items]  
Net operating loss carry forwards 13,800
Protalix Ltd. [Member]
  
Income Tax Disclosure [Line Items]  
Additional gradual decrease in tax rate, 2012 23.00%
Additional gradual decrease in tax rate, 2013 22.00%
Additional gradual decrease in tax rate, 2014 21.00%
Additional gradual decrease in tax rate, 2015 20.00%
Additional gradual decrease in tax rate, 2016 18.00%
Additional gradual decrease in tax rate, thereafter 18.00%
Net operating loss carry forwards $ 58,700
Protalix Ltd. [Member] | Law for Amending the Israel Income Tax Ordinance, Tax Thereafter [Member]
  
Income Tax Disclosure [Line Items]  
Statutory income tax rate 25.00%
Minimum [Member] | Protalix Ltd. [Member]
  
Income Tax Disclosure [Line Items]  
Statutory income tax rate 26.00%
Maximum [Member]
  
Income Tax Disclosure [Line Items]  
Statutory income tax rate 39.00%
Maximum [Member] | Protalix Ltd. [Member]
  
Income Tax Disclosure [Line Items]  
Statutory income tax rate 25.00%