XML 69 R56.htm IDEA: XBRL DOCUMENT
v3.19.1

Fair Value of Financial Instruments - Additional Information (Detail) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Fair Value of Financial Instruments [Line Items] |  |
Cash and cash equivalents | $ 34,530,000 | $ 71,157,000
Restricted cash | 527,000 | $ 527,000
Short-term investments | $ 24,764,000 |
Fair value of note payable to related party, description | The fair value measurement of the note payable is based on discounted cash flow model and it is sensitive to the change in yield (Level 3 in the fair value hierarchy). If the yield increases by approximately 2% from 22% to 24%, the fair value of the note payable with the conversion feature would change from $69.4 million to $67.6 million, or a decrease of $1.8 million and -2.6%; if the yield decreases 2% from 22% to 20%, the fair value of the note payable with conversion feature would change from $69.4 million to $71.3 million, or an increase of $1.9 million or 2.7%. If the yield increases by approximately 4% from 22% to 26%, the fair value of the note payable with the conversion feature would change from $69.4 million to $65.9 million, or a decrease of $3.5 million and -5.0%; if the yield decreases 4% from 22% to 18%, the fair value of the note payable with conversion feature would change from $69.4 million to $73.2 million, or an increase of $3.8 million and 5.5%. |
Fair value of the liability, percentage decrease | 6.00% |
Minimum |  |
Fair Value of Financial Instruments [Line Items] |  |
Probabilities of meeting the milestones, amount | $ 50,000,000 |
Probabilities of meeting the milestones, percentage decrease | 5.00% |
Fair value of the liability, percentage decrease | 13.00% |
Maximum |  |
Fair Value of Financial Instruments [Line Items] |  |
Probabilities of meeting the milestones, amount | $ 200,000,000 |
Probabilities of meeting the milestones, percentage decrease | 10.00% |
Fair value of the liability, percentage decrease | 25.00% |
Note Payable Yield Changes 1 |  |
Fair Value of Financial Instruments [Line Items] |  |
Note payable, percentage of interest rate increases (decreases) | 2.00% |
Note payable, percentage of yield | 0.24 | 0.22
Note payable to related party, fair value | $ 67,600,000 | $ 69,400,000
Change in fair value of note payable value due to change in interest rate percentage | $ (1,800,000) |
Increase (decrease) in fair value of note payable percentage due to increases (decreases) in interest rate percentage | (2.60%) |
Note Payable Yield Changes 2 |  |
Fair Value of Financial Instruments [Line Items] |  |
Note payable, percentage of interest rate increases (decreases) | (2.00%) |
Note payable, percentage of yield | 0.20 | 0.22
Note payable to related party, fair value | $ 71,300,000 | $ 69,400,000
Change in fair value of note payable value due to change in interest rate percentage | $ 1,900,000 |
Increase (decrease) in fair value of note payable percentage due to increases (decreases) in interest rate percentage | 2.70% |
Note Payable Yield Changes 3 |  |
Fair Value of Financial Instruments [Line Items] |  |
Note payable, percentage of interest rate increases (decreases) | 4.00% |
Note payable, percentage of yield | 0.26 | 0.22
Note payable to related party, fair value | $ 65,900,000 | $ 69,400,000
Change in fair value of note payable value due to change in interest rate percentage | $ (3,500,000) |
Increase (decrease) in fair value of note payable percentage due to increases (decreases) in interest rate percentage | (5.00%) |
Note Payable Yield Changes 4 |  |
Fair Value of Financial Instruments [Line Items] |  |
Note payable, percentage of interest rate increases (decreases) | (4.00%) |
Note payable, percentage of yield | 0.18 | 0.22
Note payable to related party, fair value | $ 73,200,000 | $ 69,400,000
Change in fair value of note payable value due to change in interest rate percentage | $ 3,800,000 |
Increase (decrease) in fair value of note payable percentage due to increases (decreases) in interest rate percentage | 5.50% |
Money Market Funds |  |
Fair Value of Financial Instruments [Line Items] |  |
Cash and cash equivalents | $ 34,500,000 | 71,700,000
Restricted cash | 500,000 | $ 500,000
U.S. Treasury bills or notes. |  |
Fair Value of Financial Instruments [Line Items] |  |
Short-term investments | $ 24,800,000 |

X
- Definition Change in fair value of note payable percentage due to change in interest rate percentage. + References No definition available. + Details
Name: | mnkd_ChangeInFairValueOfNotePayablePercentageDueToChangeInInterestRatePercentage
Namespace Prefix: | mnkd_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Change in fair value of note payable value due to change in interest rate percentage. + References No definition available. + Details
Name: | mnkd_ChangeInFairValueOfNotePayableValueDueToChangeInInterestRatePercentage
Namespace Prefix: | mnkd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Fair value of financial instruments. + References No definition available. + Details
Name: | mnkd_FairValueOfFinancialInstrumentsLineItems
Namespace Prefix: | mnkd_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value of liability, percentage decrease. + References No definition available. + Details
Name: | mnkd_FairValueOfLiabilityPercentageDecrease
Namespace Prefix: | mnkd_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value of liability percentage decrease if probabilities of meeting milestones percentage decrease. + References No definition available. + Details
Name: | mnkd_FairValueOfLiabilityPercentageDecreaseIfProbabilitiesOfMeetingMilestonesPercentageDecrease
Namespace Prefix: | mnkd_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value of note payable to related party description. + References No definition available. + Details
Name: | mnkd_FairValueOfNotePayableToRelatedPartyDescription
Namespace Prefix: | mnkd_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Note payable, percentage of interest rate change. + References No definition available. + Details
Name: | mnkd_NotePayablePercentageOfInterestRateChange
Namespace Prefix: | mnkd_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Probabilities of meeting milestones amount. + References No definition available. + Details
Name: | mnkd_ProbabilitiesOfMeetingMilestonesAmount
Namespace Prefix: | mnkd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Probabilities of meeting milestones, percentage decrease. + References No definition available. + Details
Name: | mnkd_ProbabilitiesOfMeetingMilestonesPercentageDecrease
Namespace Prefix: | mnkd_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3044-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82887183&loc=d3e6676-107765 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_CashAndCashEquivalentsAtCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Value of input used to measure debt instrument, including, but not limited to, convertible and non-convertible debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 + Details
Name: | us-gaap_DebtInstrumentMeasurementInput
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Fair value portion of notes payable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20,22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_NotesPayableFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of cash restricted as to withdrawal or usage, classified as current. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=98513485&loc=SL98516268-108586 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82887183&loc=d3e6676-107765 + Details
Name: | us-gaap_RestrictedCashCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investments including trading securities, available-for-sale securities, held-to-maturity securities, and short-term investments classified as other and current. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(4)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(5)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(1)(g)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_ShortTermInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=mnkd_NotePayableYieldChangesOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=mnkd_NotePayableYieldChangesTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=mnkd_NotePayableYieldChangesThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=mnkd_NotePayableYieldChangesFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CashAndCashEquivalentsAxis=us-gaap_MoneyMarketFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CashAndCashEquivalentsAxis=us-gaap_USTreasurySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |