XML 42 R1.htm IDEA: XBRL DOCUMENT v2.4.1.9
Document and Entity Information
3 Months Ended
Mar. 31, 2015
May 01, 2015
Document and Entity Information    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Mar. 31, 2015  
Document Fiscal Period Focus Q1  
Document Fiscal Year Focus 2015  
Entity Registrant Name HEMISPHERX BIOPHARMA INC  
Entity Central Index Key 0000946644  
Current Fiscal Year End Date --12-31  
Entity Filer Category Smaller Reporting Company  
Entity Common Stock, Shares Outstanding (shares)   232,558,832dei_EntityCommonStockSharesOutstanding