Collaborative Arrangement milestone payment amount.

No definition available.

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Namespace Prefix:	plx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Collaborative arrangement profit sharing percentage.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

License And Supply Agreement Potential Future Payment Based On Net Profits

+ References

No definition available.

+ Details

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Namespace Prefix:	plx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Number of subsidiaries.

+ References

No definition available.

+ Details

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Namespace Prefix:	plx_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The floor purchase amount that one or more customers of the entity must satisfy in order to be entitled to certain rights under the terms of disclosed arrangements.

+ References

No definition available.

+ Details

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Namespace Prefix:	plx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Revenue threshold if not met by July 31, 2015, the Company will have the right to terminate the agreement, in which case all rights to the technology that were transferred to Fiocruz will be returned to the Company.

+ References

No definition available.

+ Details

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Namespace Prefix:	plx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Details

Name:	plx_SignificantAccountingPoliciesLineItems
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The floor purchase amount that one or more customers of the entity must satisfy per calendar year to comply with the terms of disclosed arrangements.

+ References

No definition available.

+ Details

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Namespace Prefix:	plx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Antidilution

-URI http://asc.fasb.org/extlink&oid=6505113

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Diluted Earnings Per Share

-URI http://asc.fasb.org/extlink&oid=6510752

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Contingent Stock Agreement

-URI http://asc.fasb.org/extlink&oid=6508534

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Face amount or stated value per share of common stock.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.29)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 30

-Article 5

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Cash received from collaborators during the current period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 25

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1(a))

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

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Namespace Prefix:
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- Details

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SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		1 Months Ended	12 Months Ended	3 Months Ended
	Mar. 31, 2015 item	Mar. 31, 2014	Jun. 18, 2013	Dec. 31, 2014	Dec. 31, 2009
Significant Accounting Policies [Line Items]
Number of Subsidiaries	2plx_NumberOfSubsidiaries
Common stock, par value per share	$ 0.001	$ 0.001
Options to purchase common stock not included in diluted LPS because the effect would be anti-dilutive	19,380,543	18,913,153
Brazil Agreement [Member] \| Protalix Ltd. [Member] \| Fiocruz [Member]
Significant Accounting Policies [Line Items]
Revenue from selling products	$ 1.7			$ 3.5
Supply commitment per year			40
Supply commitment for entitled rights to be received			280
Additional purchase amount by July 31, 2015	30
License and supply agreement potential future payment			12.5
Pfizer Agreement [Member]
Significant Accounting Policies [Line Items]
Pfizer Agreement, upfront payment received					60.0
Pfizer Agreement [Member] \| Upon FDAApproval [Member]
Significant Accounting Policies [Line Items]
Pfizer Agreement, milestone payment amount	$ 30.0
Pfizer Agreement [Member] \| Pfizer Incorporation [Member]
Significant Accounting Policies [Line Items]
Pfizer Agreement, future revenues and expense sharing percentage	60.00%
Pfizer Agreement [Member] \| Protalix Bio Therapeutics Incorporation [Member]
Significant Accounting Policies [Line Items]
Pfizer Agreement, future revenues and expense sharing percentage	40.00%