XML 55 R36.htm IDEA: XBRL DOCUMENT v2.4.1.9
SHARE CAPITAL (Narrative) (Details) (USD $)
0 Months Ended 12 Months Ended 0 Months Ended
Sep. 18, 2013
Feb. 22, 2012
Dec. 31, 2014
Dec. 31, 2012
Jul. 16, 2012
Sep. 28, 2014
Jul. 24, 2014
Dec. 14, 2006
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Common stock issued   5,175,000us-gaap_StockIssuedDuringPeriodSharesNewIssues            
Underwritten public offering, common stock price per share   $ 5.25us-gaap_SaleOfStockPricePerShare            
Underwritten public offering, net proceeds from issuance   $ 25,400,000us-gaap_ProceedsFromIssuanceOfCommonStock            
Underwritten public offering, commissions and issuance costs   1,800,000us-gaap_PaymentsOfStockIssuanceCosts            
Common stock available for issuance     1,923,444us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant         13,841,655us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
Restricted stock granted, value       8,600,000us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross        
Unrecognized share-based compensation expense     1,400,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized          
Unrecognized compensation cost, recognition period     1 year          
Interest rate 4.50%us-gaap_DebtInstrumentInterestRateStatedPercentage              
Proceeds from private placement 66,800,000us-gaap_ProceedsFromIssuanceOfPrivatePlacement              
Principal amount, related to the initial purchaser's over-allotment option 9,000,000plx_DebtInstrumentPrincipalAmountRelatedToInitialPurchaserOverAllotmentOption              
Employees [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of options or restricted stock granted     2,400,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_TitleOfIndividualAxis
= plx_EmployeesMember
         
Restricted Stock [Member] | Officers And Certain Employees [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Common stock available for issuance         1,500,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_TitleOfIndividualAxis
= plx_OfficersAndCertainEmployeesMember
     
Shares of common stock issued, lock up period         24 months      
Number of installments for vesting of stock         16plx_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfInstallmentsForVestingPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_TitleOfIndividualAxis
= plx_OfficersAndCertainEmployeesMember
     
Restricted Stock [Member] | Employees [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of options or restricted stock granted         400,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_TitleOfIndividualAxis
= plx_EmployeesMember
     
Number of installments for vesting of stock         12plx_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfInstallmentsForVestingPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_TitleOfIndividualAxis
= plx_EmployeesMember
     
Restricted Stock [Member] | Officers And Directors In Private Transaction [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of options or restricted stock granted         1,100,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_TitleOfIndividualAxis
= plx_OfficersAndDirectorsInPrivateTransactionMember
     
Option to purchase shares of common stock [Member] | President and Chief Executive Officer [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of options or restricted stock granted           900,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_TitleOfIndividualAxis
= plx_PresidentAndChiefExecutiveOfficerMember
   
Exercise price           $ 2.37us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_TitleOfIndividualAxis
= plx_PresidentAndChiefExecutiveOfficerMember
   
Number of installments for vesting of stock           16plx_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfInstallmentsForVestingPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_TitleOfIndividualAxis
= plx_PresidentAndChiefExecutiveOfficerMember
   
Vesting period           4 years    
Expiration period           10 years    
Fair value of at grant date           1,000,000plx_ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_TitleOfIndividualAxis
= plx_PresidentAndChiefExecutiveOfficerMember
   
Expected life in years           6 years    
Dividend yield           0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_TitleOfIndividualAxis
= plx_PresidentAndChiefExecutiveOfficerMember
   
Expected volatility           62.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_TitleOfIndividualAxis
= plx_PresidentAndChiefExecutiveOfficerMember
   
Risk free interest rate           1.86%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_TitleOfIndividualAxis
= plx_PresidentAndChiefExecutiveOfficerMember
   
Option to purchase shares of common stock [Member] | Board of Directors Chairman [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of options or restricted stock granted             150,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_BoardOfDirectorsChairmanMember
 
Exercise price             $ 3.37us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_BoardOfDirectorsChairmanMember
 
Vesting period             3 years  
Fair value of at grant date             $ 193,000plx_ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_BoardOfDirectorsChairmanMember
 
Expected life in years             6 years  
Dividend yield             0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_BoardOfDirectorsChairmanMember
 
Expected volatility             62.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_BoardOfDirectorsChairmanMember
 
Risk free interest rate             1.90%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_BoardOfDirectorsChairmanMember
 
Option to purchase shares of common stock [Member] | Board of Directors Chairman [Member] | Vest on the first anniversary of the grant date                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Shares vested             50,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_BoardOfDirectorsChairmanMember
/ us-gaap_VestingAxis
= us-gaap_ShareBasedCompensationAwardTrancheOneMember
 
Option to purchase shares of common stock [Member] | Board of Directors Chairman [Member] | Vest over the subsequent two-year period                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of installments for vesting of stock             8plx_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfInstallmentsForVestingPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_TitleOfIndividualAxis
= us-gaap_BoardOfDirectorsChairmanMember
/ us-gaap_VestingAxis
= us-gaap_ShareBasedCompensationAwardTrancheTwoMember