Subsequent Events	12 Months Ended
Dec. 31, 2016
Subsequent Event [Abstract]
Subsequent Events	16. Subsequent Events During February 2017, BioTime sold 7,453,704 common shares in an underwritten public offering. The offering price to the public was $2.70 per share and net proceeds to BioTime were approximately $18.7 million, after deducting underwriting discounts, commissions and expenses related to the financing. On February 17, 2017, certain of OncoCyte investors exercised 625,000 Offering Warrants at an exercise price of $3.25 per warrant for total exercise cash proceeds of $2.0 million (the “Warrant exercise”). The Offering Warrants had been issued as part of OncoCyte’s financing that was completed on August 29, 2016 (see Note 9). In order to induce the investors to complete the Warrant exercise and, in conjunction with the Warrant exercise, OncoCyte issued new warrants to those investors (the “New Warrants”). Certain investors received 200,000 New Warrants with an exercise price of $5.50 per warrant share and the other investor received 212,500 New Warrants with an exercise of $3.25 per warrant share. The New Warrants are exercisable at any time for five years from February 17, 2017. As a result of the issuance of 625,000 shares of OncoCyte common stock in the Warrant exercise, as of February 17, 2017, BioTime owned less than 50% of the OncoCyte outstanding common stock. Under GAAP, loss of control of a subsidiary is deemed to have occurred when, among other things, a parent company owns less than a majority of the outstanding common stock of the subsidiary, lacks a controlling financial interest in the subsidiary, and is unable to unilaterally control the subsidiary through other means such as having the ability or being able to obtain the ability to elect a majority of the subsidiary’s Board of Directors. BioTime determined that all of these loss of control factors were present with respect to OncoCyte on February 17, 2017. Accordingly, BioTime has deconsolidated OncoCyte’s financial statements and results of operations from BioTime, effective February 17, 2017, in accordance with ASC, 810-10-40-4(c), Consolidation.

16. Subsequent Events

During February 2017, BioTime sold 7,453,704 common shares in an underwritten public offering. The offering price to the public was $2.70 per share and net proceeds to BioTime were approximately $18.7 million, after deducting underwriting discounts, commissions and expenses related to the financing.

On February 17, 2017, certain of OncoCyte investors exercised 625,000 Offering Warrants at an exercise price of $3.25 per warrant for total exercise cash proceeds of $2.0 million (the “Warrant exercise”). The Offering Warrants had been issued as part of OncoCyte’s financing that was completed on August 29, 2016 (see Note 9). In order to induce the investors to complete the Warrant exercise and, in conjunction with the Warrant exercise, OncoCyte issued new warrants to those investors (the “New Warrants”). Certain investors received 200,000 New Warrants with an exercise price of $5.50 per warrant share and the other investor received 212,500 New Warrants with an exercise of $3.25 per warrant share. The New Warrants are exercisable at any time for five years from February 17, 2017.

As a result of the issuance of 625,000 shares of OncoCyte common stock in the Warrant exercise, as of February 17, 2017, BioTime owned less than 50% of the OncoCyte outstanding common stock. Under GAAP, loss of control of a subsidiary is deemed to have occurred when, among other things, a parent company owns less than a majority of the outstanding common stock of the subsidiary, lacks a controlling financial interest in the subsidiary, and is unable to unilaterally control the subsidiary through other means such as having the ability or being able to obtain the ability to elect a majority of the subsidiary’s Board of Directors. BioTime determined that all of these loss of control factors were present with respect to OncoCyte on February 17, 2017. Accordingly, BioTime has deconsolidated OncoCyte’s financial statements and results of operations from BioTime, effective February 17, 2017, in accordance with ASC, 810-10-40-4(c), Consolidation.