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State Research and Development Credit Exchange Receivable - Additional Information (Detail) (USD $) | 9 Months Ended |
--- | --- | ---
Sep. 30, 2014 | Dec. 31, 2013
Accounts and Other Receivables [Line Items] |  |
Percentage of credit exchange receivable | 65.00% |
Estimated amounts receivable under program, Current | $ 803,000 | $ 0
Estimated amounts receivable under program, Long-term | $ 260,000 | $ 298,000

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- Details
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Period Type: | duration

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- Definition Estimated Amounts Credit Exchange Receivable Current + References No definition available. + Details
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Balance Type: | debit
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- Definition Estimated Amounts Credit Exchange Receivable Noncurrent + References No definition available. + Details
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Namespace Prefix: | mnkd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Percentage of credit exchange receivable. + References No definition available. + Details
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