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Schedule of Lease payments to the Mann foundation (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Mann Foundation | Sublease Agreement
Lease and Rental Expense [Line Items]
Lease payments	$ 60	$ 67	$ 122	$ 133

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- Definition

Lease and Rental Expense [Line Items]

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- Definition

Office Lease Expense

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

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Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=mnkd_AlfredMannFoundationMember
Namespace Prefix:
Data Type:	na
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Period Type:

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Name:	us-gaap_RelatedPartyTransactionAxis=mnkd_SubleaseAgreementMember
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Period Type: