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Commitments and Contingencies - Summary of Financing Liability Costs (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2022 | Sep. 30, 2022
Commitments And Contingencies Disclosure [Abstract] |  |
Interest expense on financing liability | $ 2,466 | $ 7,280

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- Definition Interest expense on financing liability. + References No definition available. + Details
Name: | mnkd_InterestExpenseOnFinancingLiability
Namespace Prefix: | mnkd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration