Note 12 - 401(k) Plan (Details)	12 Months Ended
Jun. 30, 2015
Compensation and Retirement Disclosure [Abstract]
Defined Contribution Pension and Other Postretirement Plans, Minimum Age	21 years

The minimum age required for participation in the Company's 401(k) Plan.

No definition available.

Name:	bnet_DefinedContributionPensionAndOtherPostretirementPlansMinimumAge
Namespace Prefix:	bnet_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration