XML 39 R22.htm IDEA: XBRL DOCUMENT
v3.21.1

PROMISSORY NOTE (Details) - USD ($) |  | 1 Months Ended | 3 Months Ended |
--- | --- | --- | --- | ---
Mar. 29, 2021 | Sep. 30, 2020 | Mar. 31, 2021 | Dec. 31, 2020
Promissory note |  |  |  | $ 4,086,000
Repayments of Notes Payable |  |  | $ 4,086,000 |
Amended Pfizer Agreement [Member] |  |  |  |
Promissory note |  | $ 4,300,000 |  |
Repayments of Notes Payable | $ 4,000,000.0 | $ 430,000 |  |

X
- Definition Sum of the carrying values as of the balance sheet date of the portions of long-term notes payable due within one year or the operating cycle if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_NotesPayableCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The cash outflow for a borrowing supported by a written promise to pay an obligation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585 + Details
Name: | us-gaap_RepaymentsOfNotesPayable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=plx_AmendedPfizerAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |