Termination of Bdsi License And Sublicenses With Umdnj (Details)	Jun. 30, 2012
Termination Of License And Sublicenses (Textual) [Abstract]
Percentage of future potential revenues collected by UMDNJ for commercialization of Bioral formulated Amphotericin B products	10.00%
Percentage of revenues collected by UMDNJ for commercialization of non-Bioral formulated Amphotericin B products	3.50%

Percentage of revenues collected by umdnj for commercialization of non-amphotericin b products.

No definition available.

Name:	bdsi_PercentageOfRevenuesCollectedByUmdnjForCommercializationOfNonamphotericinBProducts
Namespace Prefix:	bdsi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant