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Consolidated Statements of Stockholders' (Deficit) (USD $)
In Thousands, except Share data
Total
Common Stock
Additional Paid-in Capital
Other Comprehensive Income (Loss)
Deficit Accumulated During the Development Stage
Beginning Balance at Dec. 31, 2011 $ (313,652)us-gaap_StockholdersEquity $ 1,315us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
$ 1,620,535us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
$ 44us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_OtherComprehensiveIncomeMember
$ (1,935,546)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= mnkd_DeficitAccumulatedDuringDevelopmentStageMember
Beginning Balance (in shares) at Dec. 31, 2011   131,523,000us-gaap_SharesOutstanding
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Exercise of stock options (in shares)   3,000us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Exercise of stock options 9us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised   9us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Issuance of common shares from the release of restricted stock units (in shares)   886,000us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Issuance of common shares from the release of restricted stock units (906)us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures 9us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
(915)us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Issuance of common shares pursuant to underwritten public offerings (in shares)   81,938,000mnkd_StockIssuedDuringPeriodSharesInitialPublicOffering
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Issuance of common shares pursuant to underwritten public offerings 166,864mnkd_StockIssuedDuringPeriodValueInitialPublicOffering 819mnkd_StockIssuedDuringPeriodValueInitialPublicOffering
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
166,045mnkd_StockIssuedDuringPeriodValueInitialPublicOffering
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Conversion of notes payable (in shares)   71,250,000us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Conversion of notes payable 184,537us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities 713us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
183,824us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Fair value of forward purchase contracts 1,237mnkd_ChangeInFairValueOfForwardExchangeRateContracts   1,237mnkd_ChangeInFairValueOfForwardExchangeRateContracts
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Issuance of common shares pursuant to litigation settlement (in shares)   225,000mnkd_StockIssuedDuringPeriodSharesIssuedRelatedToLegalSettlement
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Issuance of common shares pursuant to litigation settlement 438mnkd_StockIssuedDuringPeriodValueIssuedRelatedToLegalSettlement 2mnkd_StockIssuedDuringPeriodValueIssuedRelatedToLegalSettlement
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
436mnkd_StockIssuedDuringPeriodValueIssuedRelatedToLegalSettlement
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Commitment to deliver common shares pursuant to litigation settlement to additional paid-in capital 6,056mnkd_AdjustmentsToAdditionalPaidInCapitalNetShareSettlementOfEquityAwards   6,056mnkd_AdjustmentsToAdditionalPaidInCapitalNetShareSettlementOfEquityAwards
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Issuance of common shares under Employee Stock Purchase Plan (in shares) 422,260us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans 211,000us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Issuance of common shares under Employee Stock Purchase Plan 862us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan 2us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
860us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Stock-based compensation 13,292us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue   13,292us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Unrealized gain/(loss) on foreign currency translation (2)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax     (2)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_OtherComprehensiveIncomeMember
 
Reclassification adjustment for gains (losses) included in net loss (48)us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax     (48)us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_OtherComprehensiveIncomeMember
 
Net loss (169,366)us-gaap_NetIncomeLoss       (169,366)us-gaap_NetIncomeLoss
/ us-gaap_StatementEquityComponentsAxis
= mnkd_DeficitAccumulatedDuringDevelopmentStageMember
Ending Balance at Dec. 31, 2012 (110,679)us-gaap_StockholdersEquity 2,860us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
1,991,379us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
(6)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_OtherComprehensiveIncomeMember
(2,104,912)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= mnkd_DeficitAccumulatedDuringDevelopmentStageMember
Ending Balance (in shares) at Dec. 31, 2012   286,035,000us-gaap_SharesOutstanding
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Exercise of stock options (in shares)   880,000us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Exercise of stock options 2,270us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised 9us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
2,261us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Issuance of common shares from the release of restricted stock units (in shares)   1,870,000us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Issuance of common shares from the release of restricted stock units (4,801)us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures 20us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
(4,821)us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Issuance of common shares pursuant to warrant exercises (in shares)   66,353,000mnkd_StockIssuedDuringPeriodSharesWarrantExercises
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Issuance of common shares pursuant to warrant exercises 172,149mnkd_StockIssuedDuringPeriodValueWarrantExercises 664mnkd_StockIssuedDuringPeriodValueWarrantExercises
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
171,485mnkd_StockIssuedDuringPeriodValueWarrantExercises
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Issuance of common shares pursuant to debt conversions by Deerfield (in Shares)   1,095,000mnkd_StockIssuedDuringPeriodSharesForDebtExchange
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Issuance of common shares pursuant to debt conversions by Deerfield 5,501mnkd_StockIssuedDuringPeriodValueForDebtExchange 12mnkd_StockIssuedDuringPeriodValueForDebtExchange
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
5,489mnkd_StockIssuedDuringPeriodValueForDebtExchange
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Issuance of common stock (in shares)   9,824,000us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Issuance of common stock 48,888us-gaap_StockIssuedDuringPeriodValueNewIssues 99us-gaap_StockIssuedDuringPeriodValueNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
48,789us-gaap_StockIssuedDuringPeriodValueNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Issuance of common shares pursuant to litigation settlement (in shares)   2,778,000mnkd_StockIssuedDuringPeriodSharesIssuedRelatedToLegalSettlement
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Issuance of common shares pursuant to litigation settlement   28mnkd_StockIssuedDuringPeriodValueIssuedRelatedToLegalSettlement
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
(28)mnkd_StockIssuedDuringPeriodValueIssuedRelatedToLegalSettlement
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Issuance of common shares under Employee Stock Purchase Plan (in shares) 463,290us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans 557,000us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Issuance of common shares under Employee Stock Purchase Plan 1,263us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan 5us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
1,258us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Stock-based compensation 45,186us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue   45,186us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Unrealized gain/(loss) on foreign currency translation 2us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax     2us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_OtherComprehensiveIncomeMember
 
Commitment to deliver common shares pursuant to Deerfield conversion to additional paid-in capital 998us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature   998us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Net loss (191,490)us-gaap_NetIncomeLoss       (191,490)us-gaap_NetIncomeLoss
/ us-gaap_StatementEquityComponentsAxis
= mnkd_DeficitAccumulatedDuringDevelopmentStageMember
Ending Balance at Dec. 31, 2013 (30,713)us-gaap_StockholdersEquity 3,697us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
2,261,996us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
(4)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_OtherComprehensiveIncomeMember
(2,296,402)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= mnkd_DeficitAccumulatedDuringDevelopmentStageMember
Ending Balance (in shares) at Dec. 31, 2013   369,392,000us-gaap_SharesOutstanding
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Exercise of stock options (in shares) 3,250,149us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised 3,251,000us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Exercise of stock options 10,978us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised 35us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
10,943us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Issuance of common shares from the release of restricted stock units (in shares)   3,996,000us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Issuance of common shares from the release of restricted stock units (26,908)us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures 38us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
(26,946)us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Issuance of common shares pursuant to warrant exercises (in shares)   11,575,000mnkd_StockIssuedDuringPeriodSharesWarrantExercises
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Issuance of common shares pursuant to warrant exercises 27,779mnkd_StockIssuedDuringPeriodValueWarrantExercises 115mnkd_StockIssuedDuringPeriodValueWarrantExercises
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
27,664mnkd_StockIssuedDuringPeriodValueWarrantExercises
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Issuance of common shares pursuant to debt conversions by Deerfield (in Shares)   17,521,000mnkd_StockIssuedDuringPeriodSharesForDebtExchange
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Issuance of common shares pursuant to debt conversions by Deerfield 93,501mnkd_StockIssuedDuringPeriodValueForDebtExchange 174mnkd_StockIssuedDuringPeriodValueForDebtExchange
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
93,327mnkd_StockIssuedDuringPeriodValueForDebtExchange
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Issuance of common shares under Employee Stock Purchase Plan (in shares) 305,076us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans 324,000us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Issuance of common shares under Employee Stock Purchase Plan 1,363us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan 2us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
1,361us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Remeasurement of performance based grants pursuant to the modification of terms 22,962us-gaap_AdjustmentsToAdditionalPaidInCapitalOther   22,962us-gaap_AdjustmentsToAdditionalPaidInCapitalOther
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Stock-based compensation 25,660us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue   25,660us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Unrealized gain/(loss) on foreign currency translation (10)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax     (10)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_OtherComprehensiveIncomeMember
 
Net loss (198,382)us-gaap_NetIncomeLoss       (198,382)us-gaap_NetIncomeLoss
/ us-gaap_StatementEquityComponentsAxis
= mnkd_DeficitAccumulatedDuringDevelopmentStageMember
Ending Balance at Dec. 31, 2014 $ (73,770)us-gaap_StockholdersEquity $ 4,061us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
$ 2,416,967us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
$ (14)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_OtherComprehensiveIncomeMember
$ (2,494,784)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= mnkd_DeficitAccumulatedDuringDevelopmentStageMember
Ending Balance (in shares) at Dec. 31, 2014   406,059,000us-gaap_SharesOutstanding
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember