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Commitments and Contingencies - Additional Information (Detail) (USD $) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Jul. 01, 2013
Commitments and Contingencies [Line Items] |  |  |  |
Operating lease rent expenses | $ 737,000 us-gaap_OperatingLeasesRentExpenseNet | $ 645,000 us-gaap_OperatingLeasesRentExpenseNet | $ 675,000 us-gaap_OperatingLeasesRentExpenseNet |
Deerfield | Milestone Rights Liability | Maximum |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |
Contingent liability for milestone payments |  |  |  | $ 90,000,000 mnkd_ContingentLiability / us-gaap_CreditFacilityAxis = mnkd_MilestoneRightsLiabilityMember / dei_LegalEntityAxis = mnkd_DeerfieldManagementCompanyLpMember / us-gaap_RangeAxis = us-gaap_MaximumMember

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- Definition Contingent Liability + References No definition available. + Details
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- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 + Details
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