v2.4.0.6
Document and Entity Information
3 Months Ended
Mar. 31, 2012
May 09, 2012
Document and Entity Information [Abstract]    
Entity Registrant Name BIOTIME INC  
Entity Central Index Key 0000876343  
Current Fiscal Year End Date --12-31  
Entity Well-known Seasoned Issuer No  
Entity Voluntary Filers No  
Entity Current Reporting Status Yes  
Entity Filer Category Accelerated Filer  
Entity Common Stock, Shares Outstanding   50,341,962
Document Fiscal Year Focus 2012  
Document Fiscal Period Focus Q1  
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Mar. 31, 2012