Commitments and Contingencies (Details Textual) - USD ($)	1 Months Ended			12 Months Ended
	Mar. 26, 2016	Oct. 28, 2013	Jul. 31, 2012	Dec. 31, 2016	Dec. 31, 2015	Jan. 17, 2014
Commitments And Contingencies [Line Items]
Office Space Taken Under Lease Agreement	505 square feet		7,097 square feet
Operating Leases, Rent Expense				$ 300,000	$ 300,000
UNITED KINGDOM
Commitments And Contingencies [Line Items]
Office Space Taken Under Lease Agreement		4,251 square feet
Operating Leases, Rent Expense				$ 120,000
Condition Two [Member]
Commitments And Contingencies [Line Items]
Contingent Liability Dcvax Direct Agreement Amount						$ 3,000,000
Condition Three [Member]
Commitments And Contingencies [Line Items]
Contingent Liability Dcvax Direct Agreement Amount						1,500,000
Condition Four [Member]
Commitments And Contingencies [Line Items]
Contingent Liability Dcvax Direct Agreement Amount						2,000,000
Condition Five [Member]
Commitments And Contingencies [Line Items]
Contingent Liability Dcvax Direct Agreement Amount						3,000,000
Condition Six [Member]
Commitments And Contingencies [Line Items]
Contingent Liability Dcvax Direct Agreement Amount						5,000,000
DCVax-Direct Agreement [Member] | Condition One [Member]
Commitments And Contingencies [Line Items]
Contingent Liability Dcvax Direct Agreement Amount						3,000,000
DCVax-Direct Agreement [Member] | Condition Two [Member]
Commitments And Contingencies [Line Items]
Contingent Liability Dcvax Direct Agreement Amount						5,000,000
DCVax-Direct Agreement [Member] | Condition Three [Member]
Commitments And Contingencies [Line Items]
Contingent Liability Dcvax Direct Agreement Amount						1,500,000
DCVax-Direct Agreement [Member] | Condition Four [Member]
Commitments And Contingencies [Line Items]
Contingent Liability Dcvax Direct Agreement Amount						2,000,000
DCVax-Direct Agreement [Member] | Condition Five [Member]
Commitments And Contingencies [Line Items]
Contingent Liability Dcvax Direct Agreement Amount						3,000,000
DCVax-Direct Agreement [Member] | Condition Six [Member]
Commitments And Contingencies [Line Items]
Contingent Liability Dcvax Direct Agreement Amount						$ 5,000,000