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Subsequent Event - Additional Information (Detail) (Subsequent Event, At Market Sales Agreement, USD $) In Millions, unless otherwise specified	Mar. 18, 2013
Subsequent Event | At Market Sales Agreement
Subsequent Event [Line Items]
Aggregate offering price for each ATM agreement	$ 50.0
No event minimum issue and sale price of common stock under both ATM Agreements	$ 50.0

X

- Definition

Aggregate Offering Price Under Each Agreement

+ References

No definition available.

+ Details

Name:	mnkd_AggregateOfferingPriceUnderEachAgreement
Namespace Prefix:	mnkd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Total Offering Price

+ References

No definition available.

+ Details

Name:	mnkd_TotalOfferingPrice
Namespace Prefix:	mnkd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_SubsequentEventLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration