XML 78 R58.htm IDEA: XBRL DOCUMENT
v3.24.0.1

CONVERTIBLE NOTES (Additional Information) (Details) |  | 12 Months Ended |  |
--- | --- | --- | --- | ---
Aug. 25, 2021 USD ($) $ / shares shares | Dec. 31, 2023 USD ($) D shares | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Jul. 31, 2017 USD ($) | Dec. 31, 2016 USD ($)
Net payment for convertible notes |  | $ 0 | $ 0 | $ 30,036,000 |  |
Loss on extinguishment of convertible notes |  | $ 0 | $ 0 | (831,000) |  |
Reacquisition of equity component of convertible notes |  |  |  | 12,019,000 |  |
Equity component of convertible notes, net of transaction costs |  |  |  | 12,027,000 |  |
2021 Notes |  |  |  |  |  |
Face amount |  |  |  |  | $ 10,000,000.0 | $ 62,700,000
Debt instrument carrying amount | $ 54,650,000 |  |  |  |  |
Interest rate |  | 7.50% |  |  |  |
Loss on extinguishment of convertible notes |  |  |  | (831,000) |  |
Reacquisition of equity component of convertible notes |  |  |  | $ 12,200,000 |  |
2024 Notes |  |  |  |  |  |
Face amount | 28,750,000 |  |  |  |  |
Net payment for convertible notes | 25,900,000 |  |  |  |  |
Convertible notes exchange in cash, accrued and unpaid interest | 1,100,000 |  |  |  |  |
Base value for conversion rate | $ 1,000 |  |  |  |  |
Number of shares for basis conversion | shares | 563.2216 |  |  |  |  |
Conversion price per share | $ / shares | $ 1.7755 |  |  |  |  |
Percentage of Premium to Closing Price of Stock | 32.50% |  |  |  |  |
Interest rate | 7.50% | 7.50% |  |  |  |
Mature term | 3 years |  |  |  |  |
Reacquisition of equity component of convertible notes |  | $ 12,000,000.0 |  |  |  |
Transactions costs in connection with the exchange of convertible notes |  | 869,000 |  |  |  |
Minimum cash balance required |  | $ 7,500,000 |  |  |  |
Maximum price per share of the conversion feature | shares |  | 746.2686 |  |  |  |
Aggregate principal amount |  | $ 20,420,000 |  |  |  |
Threshold trading days | D |  | 20 |  |  |  |
Threshold consecutive trading days | D |  | 30 |  |  |  |
Threshold Percentage Of Conversion Price |  | 130.00% |  |  |  |
Aggregate percentage of principle amount |  | 15.00% |  |  |  |
Amount of redemption of debt |  | $ 0 |  |  |  |
Percentage of outstanding capital stock |  | 100.00% |  |  |  |
Denomination of the principal amount of debt |  | $ 1,000 |  |  |  |
Redemption price, percentage |  | 100.00% |  |  |  |
2024 Notes | Minimum |  |  |  |  |  |
Number of calendar days after the date of applicable fundamental change purchase date | D |  | 20 |  |  |  |
2024 Notes | Maximum |  |  |  |  |  |
Number of calendar days after the date of applicable fundamental change purchase date | D |  | 35 |  |  |  |

X
- Definition Amount of accrued and unpaid interest exchanged in cash in debt conversion. + References No definition available. + Details
Name: | plx_DebtConversionConvertedInstrumentExchangeInCashAccruedAndUnpaidInterest
Namespace Prefix: | plx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The transaction costs in connection with exchange of convertible notes. + References No definition available. + Details
Name: | plx_DebtConversionTransactionCostsInConnectionWithExchangeOfConvertibleDebt
Namespace Prefix: | plx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Aggregate percentage of principle amount of debt outstanding. + References No definition available. + Details
Name: | plx_DebtInstrumentAggregatePercentageOfPrincipleAmountOutstanding
Namespace Prefix: | plx_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Debt Instrument Convertible Base Value For Conversion Rate + References No definition available. + Details
Name: | plx_DebtInstrumentConvertibleBaseValueForConversionRate
Namespace Prefix: | plx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Debt Instrument Convertible Conversion Share Number + References No definition available. + Details
Name: | plx_DebtInstrumentConvertibleConversionShareNumber
Namespace Prefix: | plx_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the denomination of the principal amount of debt that is used in conversion calculations. + References No definition available. + Details
Name: | plx_DebtInstrumentPrincipalAmountDenominationForConversionIntoCommonStock
Namespace Prefix: | plx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of redemption of debt as at the end of the reporting period. + References No definition available. + Details
Name: | plx_DebtInstrumentRedemption
Namespace Prefix: | plx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Equity Component Of Convertible Notes Net Of Transaction Costs + References No definition available. + Details
Name: | plx_EquityComponentOfConvertibleNotesNetOfTransactionCosts
Namespace Prefix: | plx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Minimum cash balance required to be maintained under long term debt agreements. + References No definition available. + Details
Name: | plx_MaintainOfMinimumCashBalance
Namespace Prefix: | plx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The maximum price per share of the conversion feature embedded in the debt instrument. + References No definition available. + Details
Name: | plx_MaximumDebtInstrumentConvertibleConversionShareNumber
Namespace Prefix: | plx_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of calendar days after the date of applicable fundamental change purchase date. + References No definition available. + Details
Name: | plx_NumberOfCalendarDaysAfterDateOfApplicableFundamentalChange
Namespace Prefix: | plx_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of outstanding capital stock. + References No definition available. + Details
Name: | plx_PercentageOfOutstandingCapitalStock
Namespace Prefix: | plx_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of premium to closing price of stock. + References No definition available. + Details
Name: | plx_PercentageOfPremiumToClosingPriceOfStock
Namespace Prefix: | plx_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Reacquisition Of Equity Component Of Convertible Notes + References No definition available. + Details
Name: | plx_ReacquisitionOfEquityComponentOfConvertibleNotes
Namespace Prefix: | plx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Threshold percentage of conversion price on sale price of the company's common stock. + References No definition available. + Details
Name: | plx_ThresholdPercentageOfConversionPrice
Namespace Prefix: | plx_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Including the current and noncurrent portions, carrying amount of debt identified as being convertible into another form of financial instrument (typically the entity's common stock) as of the balance sheet date, which originally required full repayment more than twelve months after issuance or greater than the normal operating cycle of the company. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)(a)(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 + Details
Name: | us-gaap_ConvertibleDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-4 + Details
Name: | us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The price per share of the conversion feature embedded in the debt instrument. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-5 + Details
Name: | us-gaap_DebtInstrumentConvertibleConversionPrice1
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Threshold period of specified consecutive trading days within which common stock price to conversion price of convertible debt instrument must exceed threshold percentage for specified number of trading days to trigger conversion feature. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentConvertibleThresholdConsecutiveTradingDays1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Threshold number of specified trading days that common stock price to conversion price of convertible debt instruments must exceed threshold percentage within a specified consecutive trading period to trigger conversion feature. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentConvertibleThresholdTradingDays
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482900/835-30-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69B -Publisher FASB -URI https://asc.fasb.org//1943274/2147481568/470-20-55-69B Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69C -Publisher FASB -URI https://asc.fasb.org//1943274/2147481568/470-20-55-69C Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482925/835-30-45-2 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482949/835-30-55-8 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of principal amount of debt redeemed. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountRedeemed
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentTerm
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481303/470-50-40-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481303/470-50-40-4 + Details
Name: | us-gaap_GainsLossesOnExtinguishmentOfDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow from the repayment of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-15 + Details
Name: | us-gaap_RepaymentsOfConvertibleDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Details
Name: | us-gaap_DebtInstrumentAxis=plx_SevenPointFivePercentageSeniorSecuredConvertibleNotesDue2024Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |