Net Loss Per Share - Schedule of Reconciliation of Net Loss to Net Loss Attributable to Heat Biologics, Inc. (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Net Loss Per Share
Net loss	$ (4,536,818)	$ (4,944,905)	$ (10,910,238)	$ (10,763,986)
Net loss: Non-controlling interest	(82,388)	(174,035)	(163,702)	(277,640)
Net loss attributable to Heat Biologics, Inc.	$ (4,454,430)	$ (4,770,870)	$ (10,746,536)	$ (10,486,346)
Weighted-average number of common shares used in net loss per share attributable to Heat Biologics, Inc.-basic and diluted	87,930,846	33,255,724	72,606,461	33,240,529
Net loss per share applicable to Heat Biologics, Inc - basic and diluted	$ (0.05)	$ (0.14)	$ (0.15)	$ (0.32)