Commitments and Contingencies (Details Narrative)	12 Months Ended
	Dec. 31, 2017 USD ($) ft² m² Integer	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2017 ILS (₪) ft² m²	Dec. 10, 2015 USD ($) ft²
Operating Leased Assets [Line Items]
Security deposit	$ 847,000
Rent expense	1,100	$ 1,500	$ 2,100
Maximum [Member]
Operating Leased Assets [Line Items]
Tenant improvement allowance	$ 1,400,000
NIS [Member]
Operating Leased Assets [Line Items]
Base rent | ₪				₪ 63,402
Cell Cure Neurosciences, Ltd. [Member] | Minimum [Member]
Operating Leased Assets [Line Items]
Royalty revenue percentage		15.00%
Cell Cure Neurosciences, Ltd. [Member] | Maximum [Member]
Operating Leased Assets [Line Items]
Royalty revenue percentage	25.00%
Milestone payments	$ 3,500,000
New Alameda Lease [Member]
Operating Leased Assets [Line Items]
Leased area | ft²					30,795
Number of buildings for lease | Integer	2
Lease term	7 years
Number of years lease can be extended	5 years
Lease commencement date	Feb. 01, 2016
Tenant improvement allowance					$ 1,400
Amount due to landlord	$ 1,200
Base rent					$ 64,670
Base rent increase rate					3.00%
Security deposit					$ 847,000
Security deposit reduction in value after first twenty four months of lease term					423,000
Additional reduction in value after first thirty six months of lease term					$ 346,000
Reporting Entities [Member] | Office Space in New York City [Member]
Operating Leased Assets [Line Items]
Base rent	5,050
Office and Laboratory Space, Jerusalem, Israel [Member]
Operating Leased Assets [Line Items]
Base rent	$ 18,247
Office and Laboratory Space, Jerusalem, Israel [Member] | Cell Cure [Member]
Operating Leased Assets [Line Items]
Leased area | m²	1,128			1,128
Number of years lease can be extended	5 years
Area of land | ft²	12,142			12,142
Lease expiration	a lease that expires between May 30, 2019 and December 31, 2020
License fees and related expenses	$ 221,000	$ 180,000	$ 282,000
Office and Laboratory Space, Jerusalem, Israel [Member] | Cell Cure [Member] | Minimum [Member]
Operating Leased Assets [Line Items]
Minimum annual maintenance fees	135,000
Office and Laboratory Space, Jerusalem, Israel [Member] | Cell Cure [Member] | Maximum [Member]
Operating Leased Assets [Line Items]
Minimum annual maintenance fees	$ 150,000