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Borrowings - Milestone Rights - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Sep. 30, 2022 | Dec. 31, 2021
Debt Instrument [Line Items] |  |
Remaining milestone rights liability | $ 4,800 | $ 5,900
Payment for liability | 5,000 |
Accrued expenses and other current liabilities | 900 | 1,100
Milestone liabilities | 4,524 | $ 4,838
Milestone rights liability, current | 1,100 |
Barings Global Milestone Rights |  |
Debt Instrument [Line Items] |  |
Milestone liabilities | $ 3,900 |

X
- Definition Milestone liabilities non-current. + References No definition available. + Details
Name: | mnkd_MilestoneLiabilitiesNoncurrent
Namespace Prefix: | mnkd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Milestone rights liabilities current and noncurrent. + References No definition available. + Details
Name: | mnkd_MilestoneRightsLiabilitiesCurrentAndNoncurrent
Namespace Prefix: | mnkd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Milestone rights liability current. + References No definition available. + Details
Name: | mnkd_MilestoneRightsLiabilityCurrent
Namespace Prefix: | mnkd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Payment for milestone rights liabilities. + References No definition available. + Details
Name: | mnkd_PaymentForMilestoneRightsLiabilities
Namespace Prefix: | mnkd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of expenses incurred but not yet paid nor invoiced, and liabilities classified as other. + References No definition available. + Details
Name: | us-gaap_AccruedLiabilitiesAndOtherLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | dei_LegalEntityAxis=mnkd_BaringsGlobalMilestoneRightsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |