Note 16 - Research and Development Credit (Details Textual) - USD ($)	12 Months Ended
Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Research and Development Credit	$ 0	$ 0	$ 4,400,000

This item represents the amount of the research and development credit recorded during the period.

No definition available.

Name:	bota_ResearchAndDevelopmentCredit
Namespace Prefix:	bota_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration