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Document and Entity Information
 3 Months Ended
Mar. 31, 2013
May 03, 2013
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Mar. 31, 2013  
Document Fiscal Year Focus 2013  
Document Fiscal Period Focus Q1  
Trading Symbol MNKD  
Entity Registrant Name MANNKIND CORP  
Entity Central Index Key 0000899460  
Current Fiscal Year End Date --12-31  
Entity Filer Category Accelerated Filer  
Entity Common Stock, Shares Outstanding   290,882,301