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Changes in Fair Value of Level 3 Forward Purchase Contract (Detail) (Fair Value, Inputs, Level 3, USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2012
Fair Value, Instruments Classified in Shareholders' Equity Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |
Beginning Balance | $ 0 us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisValueOfInstrumentsClassifiedInShareholdersEquity
Issuance | 29,317 us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisInstrumentsClassifiedInShareholdersEquityTransfersIntoLevel3
Adjustments to fair value included in other income (expense) | (1,237)us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisInstrumentsClassifiedInShareholdersEquityGainLossIncludedInOtherComprehensiveIncomeLoss
Transfers to additional paid-in-capital | (28,080)us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisInstrumentsClassifiedInShareholdersEquitySettlements
Ending Balance | 0 us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisValueOfInstrumentsClassifiedInShareholdersEquity
The February 2012 Forward Purchase Contract |
Fair Value, Instruments Classified in Shareholders' Equity Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |
Beginning Balance | 0 us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisValueOfInstrumentsClassifiedInShareholdersEquity / us-gaap_DerivativeByNatureAxis = mnkd_FebruaryTwentyTwelveForwardContractMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Issuance | 1,080 us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisInstrumentsClassifiedInShareholdersEquityTransfersIntoLevel3 / us-gaap_DerivativeByNatureAxis = mnkd_FebruaryTwentyTwelveForwardContractMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Adjustments to fair value included in other income (expense) | 12,011 us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisInstrumentsClassifiedInShareholdersEquityGainLossIncludedInOtherComprehensiveIncomeLoss / us-gaap_DerivativeByNatureAxis = mnkd_FebruaryTwentyTwelveForwardContractMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Transfers to additional paid-in-capital | (13,091)us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisInstrumentsClassifiedInShareholdersEquitySettlements / us-gaap_DerivativeByNatureAxis = mnkd_FebruaryTwentyTwelveForwardContractMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Ending Balance | 0 us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisValueOfInstrumentsClassifiedInShareholdersEquity / us-gaap_DerivativeByNatureAxis = mnkd_FebruaryTwentyTwelveForwardContractMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
The October 2012 Forward Purchase Contract |
Fair Value, Instruments Classified in Shareholders' Equity Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |
Beginning Balance | 0 us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisValueOfInstrumentsClassifiedInShareholdersEquity / us-gaap_DerivativeByNatureAxis = mnkd_OctoberTwentyTwelveForwardContractMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Issuance | 28,237 us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisInstrumentsClassifiedInShareholdersEquityTransfersIntoLevel3 / us-gaap_DerivativeByNatureAxis = mnkd_OctoberTwentyTwelveForwardContractMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Adjustments to fair value included in other income (expense) | (13,248)us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisInstrumentsClassifiedInShareholdersEquityGainLossIncludedInOtherComprehensiveIncomeLoss / us-gaap_DerivativeByNatureAxis = mnkd_OctoberTwentyTwelveForwardContractMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Transfers to additional paid-in-capital | (14,989)us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisInstrumentsClassifiedInShareholdersEquitySettlements / us-gaap_DerivativeByNatureAxis = mnkd_OctoberTwentyTwelveForwardContractMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Ending Balance | $ 0 us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisValueOfInstrumentsClassifiedInShareholdersEquity / us-gaap_DerivativeByNatureAxis = mnkd_OctoberTwentyTwelveForwardContractMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member

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- Definition Amount of gain (loss) recognized in other comprehensive income (loss) for financial instrument classified in shareholders' equity measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1a) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Amount of settlements of financial instrument classified in shareholders' equity measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Amount of transfers of financial instrument classified in shareholders' equity into level 3 of the fair value hierarchy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Fair value of financial instrument classified in shareholders' equity measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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