XML 67 R47.htm IDEA: XBRL DOCUMENT
v3.19.1

CONVERTIBLE NOTES (Fair Value Income Approach) (Details) - Fair Value, Inputs, Level 3 [Member] - $ / shares |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 07, 2016 | Jul. 24, 2017 | Dec. 31, 2018
Four Point Five Percentage Convertible Notes 2022 [Member] |  |  |
Stock price (USD) |  | $ 0.77 |
Expected term |  | 4 years 6 months 25 days |
Risk free rate |  | 1.78% |
Volatility |  | 62.68% |
Yield |  | 15.21% |
Seven Point Five Percentage Convertible Notes [Member] |  |  |
Stock price (USD) | $ 0.3 | $ 0.77 |
Expected term | 4 years 11 months 8 days | 4 years 3 months 25 days | 2 years 10 months 17 days
Risk free rate | 1.86% | 1.74% | 2.44%
Volatility | 54.12% | 63.79% | 75.94%
Yield | 13.98% | 11.56% | 13.34%

X
- Definition Expected dividends to be paid to holders of the underlying shares or financial instruments (expressed as a percentage of the share or instrument's price). + References No definition available. + Details
Name: | plx_FairValueAssumptionsExpectedDividendRates
Namespace Prefix: | plx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price. + References No definition available. + Details
Name: | plx_FairValueAssumptionsExpectedVolatilityRates
Namespace Prefix: | plx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Risk-free interest rate assumption used in valuing an instrument. + References No definition available. + Details
Name: | plx_FairValueAssumptionsRiskFreeInterestRates
Namespace Prefix: | plx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | plx_FairValueAssumptionsTerm
Namespace Prefix: | plx_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Price of a single share of a number of saleable stocks of a company. + References No definition available. + Details
Name: | plx_StrikePrice
Namespace Prefix: | plx_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

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

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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