XML 124 R51.htm IDEA: XBRL DOCUMENT v2.4.1.9
Note 2- Liquidity and Capital Resources (Details) (USD $)
1 Months Ended 12 Months Ended 0 Months Ended 12 Months Ended
Oct. 31, 2014
Dec. 31, 2015
Mar. 01, 2015
Dec. 31, 2014
Mar. 10, 2015
Dec. 31, 2013
Mar. 31, 2010
Sep. 30, 2013
Note 2- Liquidity and Capital Resources (Details) [Line Items]                
Ownership Percentage, Oil and Gas Exploration Block       100.00%bpz_OwnershipPercentageOilAndGasExplorationBlock        
Private Placement Offer Withdrawn $ 150,000,000bpz_PrivatePlacementOfferWithdrawn              
Subsequent Event [Member] | Scenario, Forecast [Member]                
Note 2- Liquidity and Capital Resources (Details) [Line Items]                
Costs Incurred, Exploration Costs   58,600,000us-gaap_CostsIncurredExplorationCosts
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
           
Subsequent Event [Member] | Convertible Notes 2015 [Member]                
Note 2- Liquidity and Capital Resources (Details) [Line Items]                
Convertible Debt         59,900,000us-gaap_ConvertibleDebt
/ us-gaap_DebtInstrumentAxis
= bpz_ConvertibleNotes2015Member
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
     
Repayments of Convertible Debt     62,000,000us-gaap_RepaymentsOfConvertibleDebt
/ us-gaap_DebtInstrumentAxis
= bpz_ConvertibleNotes2015Member
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
         
Debt Instrument, Pricipal Repayment Grace Period     10 days          
Debt Instrument, Interest Repayment Grace Period     30 days          
Debt Instrument, Threshold to Declare Principal and Interest Immediately Due and Payable         25.00%bpz_DebtInstrumentThresholdToDeclarePrincipalAndInterestImmediatelyDueAndPayable
/ us-gaap_DebtInstrumentAxis
= bpz_ConvertibleNotes2015Member
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
     
Subsequent Event [Member] | Convertible Notes 2017 [Member]                
Note 2- Liquidity and Capital Resources (Details) [Line Items]                
Debt Instrument, Threshold to Declare Principal and Interest Immediately Due and Payable         25.00%bpz_DebtInstrumentThresholdToDeclarePrincipalAndInterestImmediatelyDueAndPayable
/ us-gaap_DebtInstrumentAxis
= bpz_ConvertibleNotes2017Member
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
     
Convertible Notes 2015 [Member]                
Note 2- Liquidity and Capital Resources (Details) [Line Items]                
Convertible Debt       59,900,000us-gaap_ConvertibleDebt
/ us-gaap_DebtInstrumentAxis
= bpz_ConvertibleNotes2015Member
    170,900,000us-gaap_ConvertibleDebt
/ us-gaap_DebtInstrumentAxis
= bpz_ConvertibleNotes2015Member
 
Debt Instrument, Interest Rate, Stated Percentage       6.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= bpz_ConvertibleNotes2015Member
  6.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= bpz_ConvertibleNotes2015Member
   
Repayments of Convertible Debt       61,837,000us-gaap_RepaymentsOfConvertibleDebt
/ us-gaap_DebtInstrumentAxis
= bpz_ConvertibleNotes2015Member
       
Convertible Notes 2017 [Member]                
Note 2- Liquidity and Capital Resources (Details) [Line Items]                
Convertible Debt       168,700,000us-gaap_ConvertibleDebt
/ us-gaap_DebtInstrumentAxis
= bpz_ConvertibleNotes2017Member
       
Debt Instrument, Interest Rate, Stated Percentage       8.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= bpz_ConvertibleNotes2017Member
  8.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= bpz_ConvertibleNotes2017Member
  8.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= bpz_ConvertibleNotes2017Member
Repayments of Convertible Debt       $ 175,880,000us-gaap_RepaymentsOfConvertibleDebt
/ us-gaap_DebtInstrumentAxis
= bpz_ConvertibleNotes2017Member