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Earnings Per Common Share ("EPS") - Potential Dilutive Securities Outstanding that are Considered Antidilutive (Parenthetical) (Detail) - RSU | 3 Months Ended
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Mar. 31, 2022
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] |
Share delivery percentage | 300.00%
Valuation assessment percentage | 0.00%

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- Definition Share delivery percentage. + References No definition available. + Details
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Namespace Prefix: | mnkd_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Valuation assessment percentage. + References No definition available. + Details
Name: | mnkd_ValuationAssessmentPercentage
Namespace Prefix: | mnkd_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- 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_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |