XML 32 R15.htm IDEA: XBRL DOCUMENT
v3.21.1

FAIR VALUE MEASUREMENT (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2021
Notes 2021 [Member] |
Schedule of liability component based on income approach | ​
​ | ​ | ​ | ​
​ |  | 2021 Notes | ​
Stock price (USD) |  | 4.46 | ​
Expected term |  | 0.63 | ​
Risk free rate |  | 0.05 | %
Volatility |  | 71.89 | %
Yield |  | 11.54 | %

X
- Definition Tabular disclosure of input and valuation technique used to measure fair value and change in valuation approach and technique for each separate class of asset and liability measured on recurring and nonrecurring basis. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DebtInstrumentAxis=plx_Notes2021Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |