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Summary of Carrying Values and Estimated Fair Values of Notes and Facility Financing Obligation (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Senior convertible notes due August 15, 2015
Convertible Debt [Line Items]
Carrying value	$ 99,593,000us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = mnkd_SeniorConvertibleNotesDueTwoThousandFifteenMember	$ 99,355,000us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = mnkd_SeniorConvertibleNotesDueTwoThousandFifteenMember
Estimated fair value	102,100,000us-gaap_DebtInstrumentFairValue / us-gaap_LongtermDebtTypeAxis = mnkd_SeniorConvertibleNotesDueTwoThousandFifteenMember	102,900,000us-gaap_DebtInstrumentFairValue / us-gaap_LongtermDebtTypeAxis = mnkd_SeniorConvertibleNotesDueTwoThousandFifteenMember
Facility financing obligation
Convertible Debt [Line Items]
Carrying value	73,400,000us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = mnkd_FacilityFinancingObligationMember	73,000,000us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = mnkd_FacilityFinancingObligationMember
Estimated fair value	$ 76,100,000us-gaap_DebtInstrumentFairValue / us-gaap_LongtermDebtTypeAxis = mnkd_FacilityFinancingObligationMember	$ 75,100,000us-gaap_DebtInstrumentFairValue / us-gaap_LongtermDebtTypeAxis = mnkd_FacilityFinancingObligationMember

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- Definition

Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

-Article 5



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

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- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 10

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13433-108611



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 12

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13476-108611

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