Note 4 - Short-Term Financial Instruments (Details Textual) - USD ($)	12 Months Ended
Jun. 30, 2015	Jun. 30, 2014
Impairment of Financial Assets	$ 0	$ 0

The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a financial assets to fair value.

No definition available.

Name:	bota_ImpairmentOfFinancialAssets
Namespace Prefix:	bota_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration