Accrued interest of related party debt.

No definition available.

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

- Definition

Amount of leases renewed per month.

+ References

No definition available.

+ Details

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

- Definition

Area of office space leased.

+ References

No definition available.

+ Details

Name:	mnkd_AreaOfOfficeSpaceLeased
Namespace Prefix:	mnkd_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

- Definition

Available loan balance cancelled.

+ References

No definition available.

+ Details

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

- Definition

Lease expiration month year.

+ References

No definition available.

+ Details

Name:	mnkd_LeaseExpirationMonthYear
Namespace Prefix:	mnkd_
Data Type:	xbrli:gYearMonthItemType
Balance Type:	na
Period Type:	duration

- Definition

Line of credit facility restricted borrowing capacity.

+ References

No definition available.

+ Details

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

- Definition

Loan agreement with related party.

+ References

No definition available.

+ Details

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

- Definition

Number of months advances outstanding.

+ References

No definition available.

+ Details

Name:	mnkd_NumberOfMonthsAdvancesOutstanding
Namespace Prefix:	mnkd_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Related party transaction debt instrument prepayment.

+ References

No definition available.

+ Details

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

- Definition

Related party transaction prepayment period.

+ References

No definition available.

+ Details

Name:	mnkd_RelatedPartyTransactionPrepaymentPeriod
Namespace Prefix:	mnkd_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

+ Details

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

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

+ Details

Name:	us-gaap_DebtInstrumentMaturityDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Date which lease or group of leases is set to expire, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

Name:	us-gaap_LeaseExpirationDate1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ 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(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

Name:	us-gaap_LineOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate.

+ References

+ Details

Name:	us-gaap_LongTermDebtPercentageBearingFixedInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

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

- Details

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

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=mnkd_AmendedAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=mnkd_LoanArrangementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=mnkd_LetterOfAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	mnkd_LeaseAgreementTypeOfAgreementAxis=mnkd_SubleaseAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=mnkd_SubleaseAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Related-Party Arrangements - Additional Information (Detail)	1 Months Ended			9 Months Ended
	May 31, 2015 USD ($) ft²	Oct. 31, 2013 USD ($)	Oct. 31, 2007 USD ($)	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Jun. 27, 2017 USD ($)	Dec. 31, 2016 USD ($)
Principal stockholder
Related Party Transaction [Line Items]
Loan agreement with related party		$ 370,000,000	$ 350,000,000
Principal stockholder \| Amended Agreement
Related Party Transaction [Line Items]
Maturity date				Jan. 05, 2020
Principal stockholder \| Loan Arrangement
Related Party Transaction [Line Items]
Accrued interest of related party debt				$ 1,200,000	$ 10,700,000		$ 9,300,000
Available amount of credit facility under covenant restrictions					$ 19,400,000	$ 19,400,000
Fixed borrowing rate				5.84%
Related party transaction prepayment period				90 days
Aggregate principal amount cancelled				$ 105,000,000
Principal amount outstanding under credit facility				79,700,000			$ 49,500,000
Principal stockholder \| Loan Arrangement \| Maximum
Related Party Transaction [Line Items]
Amount prepaid for cancellation of indebtedness				$ 200,000,000
Principal stockholder \| Loan Arrangement \| Minimum
Related Party Transaction [Line Items]
Number of months advances outstanding				12 months
Related Party Debt \| Letter Agreement
Related Party Transaction [Line Items]
Description of variable rate interest				the interest rate will increase to the one-year LIBOR calculated on the date of the initial advance or in effect on the date of default, whichever is greater, plus 5% per annum.
Related Party Debt \| Letter Agreement \| LIBOR
Related Party Transaction [Line Items]
Interest rate (LIBOR)				5.00%
Mann Foundation \| Sublease Agreement
Related Party Transaction [Line Items]
Lease expiration date				Aug. 31, 2017
Mann Foundation \| Sublease Agreement
Related Party Transaction [Line Items]
Area of office space leased \| ft²	12,500
Lease expiration period				2017-04
Amount of leases renewed per month	$ 20,000