Condensed Consolidated Statement of Stockholders' Equity (Parenthetical) (Common Stock [Member])	9 Months Ended
Sep. 30, 2014
Common Stock [Member]
Equity Issuance [Line Items]
Exercise of stock options, shares	55,837
Cashless exercise of options, shares	10,442
Cashless exercise of warrants, shares	40,047

Number of shares of stock issued as a result of the exercise of stock options.

No definition available.

Name:	htbx_StockIssuedDuringPeriodStockOptionsExercisedNumberOfShares
Namespace Prefix:	htbx_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration