Subsequent Events	9 Months Ended
Sep. 30, 2012
Subsequent Events [Abstract]
Subsequent Events	11. Subsequent Events Subsequent events – These condensed consolidated financial statements were approved by management and the Board of Directors, and were issued on November 5, 2012. Subsequent events have been evaluated through that date. On November 1, 2012, BioTime entered into a Share Purchase Agreement with our subsidiary Cell Cure Neurosciences Ltd. ("Cell Cure Neurosciences"), an Israeli company, pursuant to which we agreed to purchase 87,456 Cell Cure Neurosciences ordinary shares in exchange for 906,735 of our common shares. As a result of the share purchase, we will own, directly and through our wholly-owned subsidiary ES Cell International Pte. Ltd., approximately 62.6% of the outstanding ordinary shares of Cell Cure Neurosciences. The number of common shares we will issue to acquire the Cell Cure Neurosciences shares was based upon an average market price of $3.86 per BioTime common share determined on the basis of the ten actual trading days prior to November 1, 2012 (it is noted that the NYSE MKT was closed on October 29th and 30th due to adverse weather conditions). Under the Share Purchase Agreement, we may be required to issue additional common shares to Cell Cure Neurosciences, or Cell Cure Neurosciences may be required to issue additional Cell Cure Neurosciences ordinary shares to us, depending upon whether the market value of BioTime common shares increases or decreases by more than 15%, based upon the average closing price for the ten trading days commencing on May 1, 2013. If the market value of BioTime common shares declines by more than 15% then we will issue an additional number of shares required to make the value of the total number of common shares we issued equal to $3.5 million, less the initial $3.86 market price multiplied by any BioTime common shares sold by Cell Cure Neurosciences prior to that date, and subject to a maximum 33% increase in the number of BioTime shares issued. Conversely, if the value of BioTime shares increases by more than 15% as of such date, Cell Cure Neurosciences will be required to issue to us a number of additional Cell Cure Neurosciences ordinary shares sufficient to bring the value of the Cell Cure shares Neurosciences issued to us under the Share Purchase Agreement to the value of the BioTime common shares we issued, also determined on the basis of a ten day trading period commencing on May 1, 2013, but subject to a 33% maximum increase in the number of Cell Cure Neurosciences shares issued.

11. Subsequent Events

Subsequent events – These condensed consolidated financial statements were approved by management and the Board of Directors, and were issued on November 5, 2012. Subsequent events have been evaluated through that date.

On November 1, 2012, BioTime entered into a Share Purchase Agreement with our subsidiary Cell Cure Neurosciences Ltd. ("Cell Cure Neurosciences"), an Israeli company, pursuant to which we agreed to purchase 87,456 Cell Cure Neurosciences ordinary shares in exchange for 906,735 of our common shares. As a result of the share purchase, we will own, directly and through our wholly-owned subsidiary ES Cell International Pte. Ltd., approximately 62.6% of the outstanding ordinary shares of Cell Cure Neurosciences.

The number of common shares we will issue to acquire the Cell Cure Neurosciences shares was based upon an average market price of $3.86 per BioTime common share determined on the basis of the ten actual trading days prior to November 1, 2012 (it is noted that the NYSE MKT was closed on October 29th and 30th due to adverse weather conditions). Under the Share Purchase Agreement, we may be required to issue additional common shares to Cell Cure Neurosciences, or Cell Cure Neurosciences may be required to issue additional Cell Cure Neurosciences ordinary shares to us, depending upon whether the market value of BioTime common shares increases or decreases by more than 15%, based upon the average closing price for the ten trading days commencing on May 1, 2013. If the market value of BioTime common shares declines by more than 15% then we will issue an additional number of shares required to make the value of the total number of common shares we issued equal to $3.5 million, less the initial $3.86 market price multiplied by any BioTime common shares sold by Cell Cure Neurosciences prior to that date, and subject to a maximum 33% increase in the number of BioTime shares issued. Conversely, if the value of BioTime shares increases by more than 15% as of such date, Cell Cure Neurosciences will be required to issue to us a number of additional Cell Cure Neurosciences ordinary shares sufficient to bring the value of the Cell Cure shares Neurosciences issued to us under the Share Purchase Agreement to the value of the BioTime common shares we issued, also determined on the basis of a ten day trading period commencing on May 1, 2013, but subject to a 33% maximum increase in the number of Cell Cure Neurosciences shares issued.