The total amount payable to entity for the achievement of regulatory and commercial milestones.

No definition available.

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

- Definition

The definition should be: "The maximum amount payable to the entity to cover development costs under agreement.

+ References

No definition available.

+ Details

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

- Definition

Collaborative arrangement profit sharing percentage.

+ References

No definition available.

+ Details

Name:	plx_CollaborativeArrangementProfitSharePercentage
Namespace Prefix:	plx_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The maximum amount payable to entity to cover development costs in any year under agreement.

+ References

No definition available.

+ Details

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

- Definition

Represents the payment as a percentage of future net sales.

+ References

No definition available.

+ Details

Name:	plx_PaymentOnNetSalesPercentage
Namespace Prefix:	plx_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of upfront,non refundable and non creditable payment receivable under the agreement for licencing rights.

+ References

No definition available.

+ Details

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

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number of new stock issued during the period.

+ 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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

+ Details

Name:	us-gaap_StockIssuedDuringPeriodSharesNewIssues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=plx_ProtalixBioTherapeuticsIncorporationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=plx_PfizerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=plx_ChiesiAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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COMMERCIALIZATION AGREEMENTS (Narrative) (Details) - USD ($) $ in Millions	1 Months Ended
	Oct. 19, 2017	Oct. 31, 2015	Nov. 30, 2009
Maximum [Member]
Additional AmountPayable For Achievement Of Regulatory And Commercial Milestones	$ 320.0
Protalix Bio Therapeutics Incorporation [Member]
Collaborative Arrangement Profit Share Percentage			40.00%
Pfizer [Member]
Stock Issued During Period, Shares, New Issues		5,649,079
Debt Instrument, Face Amount		$ 4.3
Chiesi Agreement [Member]
Upfront Nonrefundable Noncreditable Payment Receivable	25.0
Additional Amounts Payable To Cover Development Costs	25.0
Maximum Entitlement Of Development Costs To Cover Per Year	$ 10.0
Chiesi Agreement [Member] \| Maximum [Member]
Payment On Net Sales Percentage	35.00%
Chiesi Agreement [Member] \| Minimum [Member]
Payment On Net Sales Percentage	15.00%