Recently Adopted Accounting Pronouncement (Details Narrative) - USD ($)	12 Months Ended
	Dec. 31, 2017	Mar. 31, 2019	Jan. 02, 2019	Dec. 31, 2018	Jan. 02, 2018
Nant Cell Licensing Agreement [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Deferred revenue	$ 6,900,000
Difference Between Revenue Guidance In Effect Before and After Topic 606 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract liability		$ 9,000		$ 50,000
Accounting Standards Update 2016-02 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Total lease liabilities		245,000	$ 310,000
ROU assets		$ 229,000	$ 290,000
Accounting Standards Update 2014-09 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract with customer, liability, revenue recognized	$ 3,200,000
Accounting Standards Update 2014-09 [Member] | Retained Earnings [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Cumulative effect adjustment					$ 6,700,000