Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

v2.4.0.8
Document and Entity Information
6 Months Ended
Jun. 30, 2014
Jul. 25, 2014
Document And Entity Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Jun. 30, 2014  
Document Fiscal Year Focus 2014  
Document Fiscal Period Focus Q2  
Trading Symbol THLD  
Entity Registrant Name THRESHOLD PHARMACEUTICALS INC  
Entity Central Index Key 0001183765  
Current Fiscal Year End Date --12-31  
Entity Filer Category Accelerated Filer  
Entity Common Stock, Shares Outstanding   59,366,054