2.4.0.8 HtmlAndXml 193 268 1 true 91 0 false 7 false false R1.htm 000 - Disclosure - Document And Entity Information Sheet http://bpzenergy.com/role/DocumentAndEntityInformation Document And Entity Information R1.xml true false R2.htm 001 - Statement - Consolidated Balance Sheets (Current Period Unaudited) Sheet http://bpzenergy.com/role/ConsolidatedBalanceSheet Consolidated Balance Sheets (Current Period Unaudited) R2.xml false false R3.htm 002 - Statement - Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) Sheet http://bpzenergy.com/role/ConsolidatedBalanceSheet_Parentheticals Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) R3.xml false false R4.htm 003 - Statement - Consolidated Statements of Operations (Unaudited) Sheet http://bpzenergy.com/role/ConsolidatedIncomeStatement Consolidated Statements of Operations (Unaudited) R4.xml false false R5.htm 004 - Statement - Consolidated Statements of Cash Flows (Unaudited) Sheet http://bpzenergy.com/role/ConsolidatedCashFlow Consolidated Statements of Cash Flows (Unaudited) R5.xml false false R6.htm 005 - Disclosure - Note 1 - Basis of Presentation and Significant Accounting Policies Sheet http://bpzenergy.com/role/Note1BasisofPresentationandSignificantAccountingPolicies Note 1 - Basis of Presentation and Significant Accounting Policies R6.xml false false R7.htm 006 - Disclosure - Note 2 - Divestiture Sheet http://bpzenergy.com/role/Note2Divestiture Note 2 - Divestiture R7.xml false false R8.htm 007 - Disclosure - Note 3 - Receivables, Accounts Payable and Accrued Liabilities Sheet http://bpzenergy.com/role/Note3ReceivablesAccountsPayableandAccruedLiabilities Note 3 - Receivables, Accounts Payable and Accrued Liabilities R8.xml false false R9.htm 008 - Disclosure - Note 4 - Inventory Sheet http://bpzenergy.com/role/Note4Inventory Note 4 - Inventory R9.xml false false R10.htm 009 - Disclosure - Note 5 - Prepaid and Other Current Assets and Other Non-Current Assets Sheet http://bpzenergy.com/role/Note5PrepaidandOtherCurrentAssetsandOtherNonCurrentAssets Note 5 - Prepaid and Other Current Assets and Other Non-Current Assets R10.xml false false R11.htm 010 - Disclosure - Note 6 - Property, Equipment and Construction in Progress Sheet http://bpzenergy.com/role/Note6PropertyEquipmentandConstructioninProgress Note 6 - Property, Equipment and Construction in Progress R11.xml false false R12.htm 011 - Disclosure - Note 7 - Asset Retirement Obligation Sheet http://bpzenergy.com/role/Note7AssetRetirementObligation Note 7 - Asset Retirement Obligation R12.xml false false R13.htm 012 - Disclosure - Note 8 - Investment in Ecuador Property Sheet http://bpzenergy.com/role/Note8InvestmentinEcuadorProperty Note 8 - Investment in Ecuador Property R13.xml false false R14.htm 013 - Disclosure - Note 9 - Restricted Cash and Performance Bonds Sheet http://bpzenergy.com/role/Note9RestrictedCashandPerformanceBonds Note 9 - Restricted Cash and Performance Bonds R14.xml false false R15.htm 014 - Disclosure - Note 10 - Debt Sheet http://bpzenergy.com/role/Note10Debt Note 10 - Debt R15.xml false false R16.htm 015 - Disclosure - Note 11 - Derivative Financial Instruments Sheet http://bpzenergy.com/role/Note11DerivativeFinancialInstruments Note 11 - Derivative Financial Instruments R16.xml false false R17.htm 016 - Disclosure - Note 12 - Stockholders' Equity Sheet http://bpzenergy.com/role/Note12StockholdersEquity Note 12 - Stockholders' Equity R17.xml false false R18.htm 017 - Disclosure - Note 13 - Fair Value Measurements and Disclosures Sheet http://bpzenergy.com/role/Note13FairValueMeasurementsandDisclosures Note 13 - Fair Value Measurements and Disclosures R18.xml false false R19.htm 018 - Disclosure - Note 14 - Oil Revenue Sheet http://bpzenergy.com/role/Note14OilRevenue Note 14 - Oil Revenue R19.xml false false R20.htm 019 - Disclosure - Note 15 - Standby Costs Sheet http://bpzenergy.com/role/Note15StandbyCosts Note 15 - Standby Costs R20.xml false false R21.htm 020 - Disclosure - Note 16 - Other Expense Sheet http://bpzenergy.com/role/Note16OtherExpense Note 16 - Other Expense R21.xml false false R22.htm 021 - Disclosure - Note 17 - Income Tax Sheet http://bpzenergy.com/role/Note17IncomeTax Note 17 - Income Tax R22.xml false false R23.htm 022 - Disclosure - Note 18 - Business Segment Information Sheet http://bpzenergy.com/role/Note18BusinessSegmentInformation Note 18 - Business Segment Information R23.xml false false R24.htm 023 - Disclosure - Note 19 - Commitments and Contingencies Sheet http://bpzenergy.com/role/Note19CommitmentsandContingencies Note 19 - Commitments and Contingencies R24.xml false false R25.htm 024 - Disclosure - Note 20 - Legal Proceedings Sheet http://bpzenergy.com/role/Note20LegalProceedings Note 20 - Legal Proceedings R25.xml false false R26.htm 025 - Disclosure - Accounting Policies, by Policy (Policies) Sheet http://bpzenergy.com/role/AccountingPoliciesByPolicy Accounting Policies, by Policy (Policies) R26.xml false false R27.htm 026 - Disclosure - Note 3 - Receivables, Accounts Payable and Accrued Liabilities (Tables) Sheet http://bpzenergy.com/role/Note3ReceivablesAccountsPayableandAccruedLiabilitiesTables Note 3 - Receivables, Accounts Payable and Accrued Liabilities (Tables) R27.xml false false R28.htm 027 - Disclosure - Note 4 - Inventory (Tables) Sheet http://bpzenergy.com/role/Note4InventoryTables Note 4 - Inventory (Tables) R28.xml false false R29.htm 028 - Disclosure - Note 5 - Prepaid and Other Current Assets and Other Non-Current Assets (Tables) Sheet http://bpzenergy.com/role/Note5PrepaidandOtherCurrentAssetsandOtherNonCurrentAssetsTables Note 5 - Prepaid and Other Current Assets and Other Non-Current Assets (Tables) R29.xml false false R30.htm 029 - Disclosure - Note 6 - Property, Equipment and Construction in Progress (Tables) Sheet http://bpzenergy.com/role/Note6PropertyEquipmentandConstructioninProgressTables Note 6 - Property, Equipment and Construction in Progress (Tables) R30.xml false false R31.htm 030 - Disclosure - Note 7 - Asset Retirement Obligation (Tables) Sheet http://bpzenergy.com/role/Note7AssetRetirementObligationTables Note 7 - Asset Retirement Obligation (Tables) R31.xml false false R32.htm 031 - Disclosure - Note 8 - Investment in Ecuador Property (Tables) Sheet http://bpzenergy.com/role/Note8InvestmentinEcuadorPropertyTables Note 8 - Investment in Ecuador Property (Tables) R32.xml false false R33.htm 032 - Disclosure - Note 9 - Restricted Cash and Performance Bonds (Tables) Sheet http://bpzenergy.com/role/Note9RestrictedCashandPerformanceBondsTables Note 9 - Restricted Cash and Performance Bonds (Tables) R33.xml false false R34.htm 033 - Disclosure - Note 10 - Debt (Tables) Sheet http://bpzenergy.com/role/Note10DebtTables Note 10 - Debt (Tables) R34.xml false false R35.htm 034 - Disclosure - Note 11 - Derivative Financial Instruments (Tables) Sheet http://bpzenergy.com/role/Note11DerivativeFinancialInstrumentsTables Note 11 - Derivative Financial Instruments (Tables) R35.xml false false R36.htm 035 - Disclosure - Note 12 - Stockholders' Equity (Tables) Sheet http://bpzenergy.com/role/Note12StockholdersEquityTables Note 12 - Stockholders' Equity (Tables) R36.xml false false R37.htm 036 - Disclosure - Note 13 - Fair Value Measurements and Disclosures (Tables) Sheet http://bpzenergy.com/role/Note13FairValueMeasurementsandDisclosuresTables Note 13 - Fair Value Measurements and Disclosures (Tables) R37.xml false false R38.htm 037 - Disclosure - Note 14 - Oil Revenue (Tables) Sheet http://bpzenergy.com/role/Note14OilRevenueTables Note 14 - Oil Revenue (Tables) R38.xml false false R39.htm 038 - Disclosure - Note 17 - Income Tax (Tables) Sheet http://bpzenergy.com/role/Note17IncomeTaxTables Note 17 - Income Tax (Tables) R39.xml false false R40.htm 039 - Disclosure - Note 1 - Basis of Presentation and Significant Accounting Policies (Details) Sheet http://bpzenergy.com/role/Note1BasisofPresentationandSignificantAccountingPoliciesDetails Note 1 - Basis of Presentation and Significant Accounting Policies (Details) R40.xml false false R41.htm 040 - Disclosure - Note 2 - Divestiture (Details) Sheet http://bpzenergy.com/role/Note2DivestitureDetails Note 2 - Divestiture (Details) R41.xml false false R42.htm 041 - Disclosure - Note 3 - Receivables, Accounts Payable and Accrued Liabilities (Details) Sheet http://bpzenergy.com/role/Note3ReceivablesAccountsPayableandAccruedLiabilitiesDetails Note 3 - Receivables, Accounts Payable and Accrued Liabilities (Details) R42.xml false false R43.htm 042 - Disclosure - Note 3 - Receivables, Accounts Payable and Accrued Liabilities (Details) - Value-Added Tax Receivable Sheet http://bpzenergy.com/role/ValueAddedTaxReceivableTable Note 3 - Receivables, Accounts Payable and Accrued Liabilities (Details) - Value-Added Tax Receivable R43.xml false false R44.htm 043 - Disclosure - Note 4 - Inventory (Details) - Inventory Sheet http://bpzenergy.com/role/InventoryTable Note 4 - Inventory (Details) - Inventory R44.xml false false R45.htm 044 - Disclosure - Note 5 - Prepaid and Other Current Assets and Other Non-Current Assets (Details) Sheet http://bpzenergy.com/role/Note5PrepaidandOtherCurrentAssetsandOtherNonCurrentAssetsDetails Note 5 - Prepaid and Other Current Assets and Other Non-Current Assets (Details) R45.xml false false R46.htm 045 - Disclosure - Note 5 - Prepaid and Other Current Assets and Other Non-Current Assets (Details) - Prepaid and Other Current Assets Sheet http://bpzenergy.com/role/PrepaidandOtherCurrentAssetsTable Note 5 - Prepaid and Other Current Assets and Other Non-Current Assets (Details) - Prepaid and Other Current Assets R46.xml false false R47.htm 046 - Disclosure - Note 5 - Prepaid and Other Current Assets and Other Non-Current Assets (Details) - Other Non-Current Assets Sheet http://bpzenergy.com/role/OtherNonCurrentAssetsTable Note 5 - Prepaid and Other Current Assets and Other Non-Current Assets (Details) - Other Non-Current Assets R47.xml false false R48.htm 047 - Disclosure - Note 5 - Prepaid and Other Current Assets and Other Non-Current Assets (Details) - Debt Issue Cost Amortized Into Interest Expense Sheet http://bpzenergy.com/role/DebtIssueCostAmortizedIntoInterestExpenseTable Note 5 - Prepaid and Other Current Assets and Other Non-Current Assets (Details) - Debt Issue Cost Amortized Into Interest Expense R48.xml false false R49.htm 048 - Disclosure - Note 6 - Property, Equipment and Construction in Progress (Details) Sheet http://bpzenergy.com/role/Note6PropertyEquipmentandConstructioninProgressDetails Note 6 - Property, Equipment and Construction in Progress (Details) R49.xml false false R50.htm 049 - Disclosure - Note 6 - Property, Equipment and Construction in Progress (Details) - Property, Equipment and Construction in Progress Sheet http://bpzenergy.com/role/PropertyEquipmentandConstructioninProgressTable Note 6 - Property, Equipment and Construction in Progress (Details) - Property, Equipment and Construction in Progress R50.xml false false R51.htm 050 - Disclosure - Note 6 - Property, Equipment and Construction in Progress (Details) - Interest And Depreciation Expense Capitalized to Construction In Progress Sheet http://bpzenergy.com/role/InterestAndDepreciationExpenseCapitalizedtoConstructionInProgressTable Note 6 - Property, Equipment and Construction in Progress (Details) - Interest And Depreciation Expense Capitalized to Construction In Progress R51.xml false false R52.htm 051 - Disclosure - Note 7 - Asset Retirement Obligation (Details) Sheet http://bpzenergy.com/role/Note7AssetRetirementObligationDetails Note 7 - Asset Retirement Obligation (Details) R52.xml false false R53.htm 052 - Disclosure - Note 7 - Asset Retirement Obligation (Details) - Asset Retirement Obligations Sheet http://bpzenergy.com/role/AssetRetirementObligationsTable Note 7 - Asset Retirement Obligation (Details) - Asset Retirement Obligations R53.xml false false R54.htm 053 - Disclosure - Note 8 - Investment in Ecuador Property (Details) Sheet http://bpzenergy.com/role/Note8InvestmentinEcuadorPropertyDetails Note 8 - Investment in Ecuador Property (Details) R54.xml false false R55.htm 054 - Disclosure - Note 8 - Investment in Ecuador Property (Details) - Income (Expense) from the Investment in the Ecuador Property Sheet http://bpzenergy.com/role/IncomeExpensefromtheInvestmentintheEcuadorPropertyTable Note 8 - Investment in Ecuador Property (Details) - Income (Expense) from the Investment in the Ecuador Property R55.xml false false R56.htm 055 - Disclosure - Note 8 - Investment in Ecuador Property (Details) - Carrying Value of Investment Property Sheet http://bpzenergy.com/role/CarryingValueofInvestmentPropertyTable Note 8 - Investment in Ecuador Property (Details) - Carrying Value of Investment Property R56.xml false false R57.htm 056 - Disclosure - Note 9 - Restricted Cash and Performance Bonds (Details) Sheet http://bpzenergy.com/role/Note9RestrictedCashandPerformanceBondsDetails Note 9 - Restricted Cash and Performance Bonds (Details) R57.xml false false R58.htm 057 - Disclosure - Note 9 - Restricted Cash and Performance Bonds (Details) - Restricted Cash Sheet http://bpzenergy.com/role/RestrictedCashTable Note 9 - Restricted Cash and Performance Bonds (Details) - Restricted Cash R58.xml false false R59.htm 058 - Disclosure - Note 9 - Restricted Cash and Performance Bonds (Details) - Restricted Cash (Parentheticals) Sheet http://bpzenergy.com/role/RestrictedCashTable_Parentheticals Note 9 - Restricted Cash and Performance Bonds (Details) - Restricted Cash (Parentheticals) R59.xml false false R60.htm 059 - Disclosure - Note 10 - Debt (Details) Sheet http://bpzenergy.com/role/Note10DebtDetails Note 10 - Debt (Details) R60.xml false false R61.htm 060 - Disclosure - Note 10 - Debt (Details) - Debt Sheet http://bpzenergy.com/role/DebtTable Note 10 - Debt (Details) - Debt R61.xml false false R62.htm 061 - Disclosure - Note 10 - Debt (Details) - Debt (Parentheticals) Sheet http://bpzenergy.com/role/DebtTable_Parentheticals Note 10 - Debt (Details) - Debt (Parentheticals) R62.xml false false R63.htm 062 - Disclosure - Note 10 - Debt (Details) - Estimated Remaining Cash Payments Sheet http://bpzenergy.com/role/EstimatedRemainingCashPaymentsTable Note 10 - Debt (Details) - Estimated Remaining Cash Payments R63.xml false false R64.htm 063 - Disclosure - Note 10 - Debt (Details) - Convertible Debt Interest Expense Sheet http://bpzenergy.com/role/ConvertibleDebtInterestExpenseTable Note 10 - Debt (Details) - Convertible Debt Interest Expense R64.xml false false R65.htm 064 - Disclosure - Note 10 - Debt (Details) - Summary of Interest Expense Sheet http://bpzenergy.com/role/SummaryofInterestExpenseTable Note 10 - Debt (Details) - Summary of Interest Expense R65.xml false false R66.htm 065 - Disclosure - Note 11 - Derivative Financial Instruments (Details) Sheet http://bpzenergy.com/role/Note11DerivativeFinancialInstrumentsDetails Note 11 - Derivative Financial Instruments (Details) R66.xml false false R67.htm 066 - Disclosure - Note 11 - Derivative Financial Instruments (Details) - Amount of Gain (Loss) on Derivative Instruments Recognized in Income Sheet http://bpzenergy.com/role/AmountofGainLossonDerivativeInstrumentsRecognizedinIncomeTable Note 11 - Derivative Financial Instruments (Details) - Amount of Gain (Loss) on Derivative Instruments Recognized in Income R67.xml false false R68.htm 067 - Disclosure - Note 12 - Stockholders' Equity (Details) Sheet http://bpzenergy.com/role/Note12StockholdersEquityDetails Note 12 - Stockholders' Equity (Details) R68.xml false false R69.htm 068 - Disclosure - Note 12 - Stockholders' Equity (Details) - Earnings (Loss) Per Share of Common Stock Sheet http://bpzenergy.com/role/EarningsLossPerShareofCommonStockTable Note 12 - Stockholders' Equity (Details) - Earnings (Loss) Per Share of Common Stock R69.xml false false R70.htm 069 - Disclosure - Note 12 - Stockholders' Equity (Details) - Stock-Based Compensation Costs Sheet http://bpzenergy.com/role/StockBasedCompensationCostsTable Note 12 - Stockholders' Equity (Details) - Stock-Based Compensation Costs R70.xml false false R71.htm 070 - Disclosure - Note 13 - Fair Value Measurements and Disclosures (Details) Sheet http://bpzenergy.com/role/Note13FairValueMeasurementsandDisclosuresDetails Note 13 - Fair Value Measurements and Disclosures (Details) R71.xml false false R72.htm 071 - Disclosure - Note 13 - Fair Value Measurements and Disclosures (Details) - Assets and Liabilities Measured on a Recurring Basis Sheet http://bpzenergy.com/role/AssetsandLiabilitiesMeasuredonaRecurringBasisTable Note 13 - Fair Value Measurements and Disclosures (Details) - Assets and Liabilities Measured on a Recurring Basis R72.xml false false R73.htm 072 - Disclosure - Note 13 - Fair Value Measurements and Disclosures (Details) - Fair Value Information Regarding Short-term Investments Sheet http://bpzenergy.com/role/FairValueInformationRegardingShorttermInvestmentsTable Note 13 - Fair Value Measurements and Disclosures (Details) - Fair Value Information Regarding Short-term Investments R73.xml false false R74.htm 073 - Disclosure - Note 13 - Fair Value Measurements and Disclosures (Details) - Fair Value of Company’s Fixed Rate Debt Sheet http://bpzenergy.com/role/FairValueofCompanysFixedRateDebtTable Note 13 - Fair Value Measurements and Disclosures (Details) - Fair Value of Company’s Fixed Rate Debt R74.xml false false R75.htm 074 - Disclosure - Note 13 - Fair Value Measurements and Disclosures (Details) - Fair Value of Company’s Fixed Rate Debt (Parentheticals) Sheet http://bpzenergy.com/role/FairValueofCompanysFixedRateDebtTable_Parentheticals Note 13 - Fair Value Measurements and Disclosures (Details) - Fair Value of Company’s Fixed Rate Debt (Parentheticals) R75.xml false false R76.htm 075 - Disclosure - Note 14 - Oil Revenue (Details) Sheet http://bpzenergy.com/role/Note14OilRevenueDetails Note 14 - Oil Revenue (Details) R76.xml false false R77.htm 076 - Disclosure - Note 14 - Oil Revenue (Details) - Royalty Costs Sheet http://bpzenergy.com/role/RoyaltyCostsTable Note 14 - Oil Revenue (Details) - Royalty Costs R77.xml false false R78.htm 077 - Disclosure - Note 15 - Standby Costs (Details) Sheet http://bpzenergy.com/role/Note15StandbyCostsDetails Note 15 - Standby Costs (Details) R78.xml false false R79.htm 078 - Disclosure - Note 16 - Other Expense (Details) Sheet http://bpzenergy.com/role/Note16OtherExpenseDetails Note 16 - Other Expense (Details) R79.xml false false R80.htm 079 - Disclosure - Note 17 - Income Tax (Details) Sheet http://bpzenergy.com/role/Note17IncomeTaxDetails Note 17 - Income Tax (Details) R80.xml false false R81.htm 080 - Disclosure - Note 17 - Income Tax (Details) - Breakdown of Income Taxes Sheet http://bpzenergy.com/role/BreakdownofIncomeTaxesTable Note 17 - Income Tax (Details) - Breakdown of Income Taxes R81.xml false false R82.htm 081 - Disclosure - Note 18 - Business Segment Information (Details) Sheet http://bpzenergy.com/role/Note18BusinessSegmentInformationDetails Note 18 - Business Segment Information (Details) R82.xml false false R83.htm 082 - Disclosure - Note 19 - Commitments and Contingencies (Details) Sheet http://bpzenergy.com/role/Note19CommitmentsandContingenciesDetails Note 19 - Commitments and Contingencies (Details) R83.xml false false All Reports Book All Reports Element us-gaap_AssetRetirementObligationLiabilitiesSettled had a mix of decimals attribute values: -5 -3. Element us-gaap_CommonStockSharesAuthorized had a mix of decimals attribute values: -3 0. Element us-gaap_ConvertibleDebt had a mix of decimals attribute values: -5 -3. Element us-gaap_ConvertibleDebtFairValueDisclosures had a mix of decimals attribute values: -5 -3. Element us-gaap_ConvertibleDebtNoncurrent had a mix of decimals attribute values: -5 -3. Element us-gaap_DebtInstrumentConvertibleConversionPrice1 had a mix of decimals attribute values: 2 4. Element us-gaap_DebtInstrumentConvertibleConversionRatio1 had a mix of decimals attribute values: 0 4. Element us-gaap_DebtInstrumentFaceAmount had a mix of decimals attribute values: -5 -3. Element us-gaap_DebtInstrumentInterestRateStatedPercentage had a mix of decimals attribute values: 3 4. Element us-gaap_DebtInstrumentUnamortizedDiscount had a mix of decimals attribute values: -5 -3. Element us-gaap_GainsLossesOnExtinguishmentOfDebt had a mix of decimals attribute values: -5 -3. Element us-gaap_HeldToMaturitySecuritiesFairValue had a mix of decimals attribute values: -5 -3. Element us-gaap_InterestCostsCapitalized had a mix of decimals attribute values: -5 -3. Element us-gaap_OtherLiabilitiesCurrent had a mix of decimals attribute values: -5 -3. Element us-gaap_OtherLiabilitiesNoncurrent had a mix of decimals attribute values: -5 -3. Element us-gaap_PaymentsToAcquirePropertyPlantAndEquipment had a mix of decimals attribute values: -5 -3. Element us-gaap_PreferredStockSharesAuthorized had a mix of decimals attribute values: -3 0. Element us-gaap_RepaymentsOfDebt had a mix of decimals attribute values: -5 -3. Element us-gaap_RestrictedCashAndCashEquivalents had a mix of decimals attribute values: -5 -3. Element us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue had a mix of decimals attribute values: -5 -3. Element us-gaap_RestrictedCashAndCashEquivalentsNoncurrent had a mix of decimals attribute values: -5 -3. Element us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant had a mix of decimals attribute values: -5 0. 'Monetary' elements on report '040 - Disclosure - Note 2 - Divestiture (Details)' had a mix of different decimal attribute values. 'Monetary' elements on report '041 - Disclosure - Note 3 - Receivables, Accounts Payable and Accrued Liabilities (Details)' had a mix of different decimal attribute values. 'Monetary' elements on report '044 - Disclosure - Note 5 - Prepaid and Other Current Assets and Other Non-Current Assets (Details)' had a mix of different decimal attribute values. 'Monetary' elements on report '048 - Disclosure - Note 6 - Property, Equipment and Construction in Progress (Details)' had a mix of different decimal attribute values. 'Monetary' elements on report '059 - Disclosure - Note 10 - Debt (Details)' had a mix of different decimal attribute values. Process Flow-Through: 001 - Statement - Consolidated Balance Sheets (Current Period Unaudited) Process Flow-Through: Removing column 'Jun. 30, 2012' Process Flow-Through: Removing column 'Dec. 31, 2011' Process Flow-Through: 002 - Statement - Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) Process Flow-Through: 003 - Statement - Consolidated Statements of Operations (Unaudited) Process Flow-Through: 004 - Statement - Consolidated Statements of Cash Flows (Unaudited) bpz-20130630.xml bpz-20130630.xsd bpz-20130630_cal.xml bpz-20130630_def.xml bpz-20130630_lab.xml bpz-20130630_pre.xml true true