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Subsequent Event - Additional Information (Detail) (Subsequent Event) In Millions, unless otherwise specified	0 Months Ended				0 Months Ended
	Jul. 31, 2014 Insulin [Member] EUR (€)	Aug. 11, 2014 License and Collaboration Agreement with Sanofi USD ($)	Aug. 11, 2014 License and Collaboration Agreement with Sanofi USD ($)	Aug. 11, 2014 License and Collaboration Agreement with Sanofi Second Amendment Facility Agreement USD ($)	Aug. 11, 2014 License and Collaboration Agreement with Sanofi Sanofi-Aventis Deutschland GmbH	Jul. 18, 2014 Deerfield Senior convertible notes due December 31, 2019 Fourth tranche USD ($)
Subsequent Event [Line Items]
Principal amount of notes purchased						$ 40.0
Purchase annual minimum quantities under Supply Agreement	120.1
Upfront fee		150.0
Potential milestone payment			775.0
Profits and losses sharing percentage		35.00%			65.00%
Maximum secured loan facility				$ 175.0

X

- Definition

Potential Milestone Payments

+ References

No definition available.

+ Details

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

X

- Definition

Profit Loss Sharing Agreement Allocation Percentage

+ References

No definition available.

+ Details

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X

- Definition

Upfront Fee

+ References

No definition available.

+ Details

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Namespace Prefix:	mnkd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Face (par) amount of the original debt instrument that was repurchased.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The minimum amount the entity agreed to spend under the long-term purchase commitment.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

X

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