Organization (Details)	Dec. 31, 2017	Dec. 31, 2016
Pelican Therapeutics, Inc. [Member]
Noncontrolling Interest [Line Items]
Percentage of voting interests acquired in acquisition	80.00%
Heat Biologics I, Inc [Member]
Noncontrolling Interest [Line Items]
Ownership interest in subsidiary	92.50%	92.50%

Percentage of voting equity interests acquired at the acquisition date in the business combination.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

Name:	us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant