Note 13 - Subsequent Events (Details Textual) - USD ($)	3 Months Ended	12 Months Ended
Sep. 16, 2016	Jun. 30, 2016	Jun. 30, 2015
Subsequent Event [Member] \| Employees and Consultants [Member]
Stock Issued During Period, Shares, Issued for Services	17,479
Stock Issued During Period, Value, Issued for Services	$ 14,000
Subsequent Event [Member] \| Consultants [Member]
Stock Issued During Period, Shares, Issued for Services	7,152
Stock Issued During Period, Value, Issued for Services	$ 6,000
Subsequent Event [Member] \| Common Stock [Member]
Stock Issued During Period, Shares, New Issues	30,467
Shares Issued, Price Per Share	$ 0.75
Subsequent Event [Member] \| Restricted Securities Units [Member]
Stock Issued During Period, Shares, New Issues	120,000
Shares of Restricted Common Stock in Each Unit	1
Number of Warrants in Each Unit	1
Warrant Component of Equity Unit, Number of Shares of Restricted Common Stock Called by Each Warrant	0.5
Warrant Component of Corporate Unit, Exercise Price Per Share of Restricted Common Stock	$ 1
Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	35,000
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price	$ 1
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 0.75
Proceeds from Warrant Exercises	$ 90,000
Number of Warrants and Rights Expired	722,319
Common Stock [Member]
Stock Issued During Period, Shares, Issued for Services		242,034	120,647
Stock Issued During Period, Shares, New Issues			75,000
Stock Issued During Period, Shares, Issued for Services		242,034	45,647
Stock Issued During Period, Value, Issued for Services		$ 228,558	$ 41,028
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		100,000	957,500
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price		$ 0.92	$ 0.74
Proceeds from Warrant Exercises		$ 387,522	$ 74,690

The number of warrants and rights expired during the period.

No definition available.

Name:	bnet_NumberOfWarrantsAndRightsExpired
Namespace Prefix:	bnet_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of warrants included in each corporate unit.

+ References

No definition available.

+ Details

Name:	bnet_NumberOfWarrantsInEachUnit
Namespace Prefix:	bnet_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the number of shares of restricted common stock included in each corporate unit.

+ References

No definition available.

+ Details

Name:	bnet_SharesOfRestrictedCommonStockInEachUnit
Namespace Prefix:	bnet_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

With regard to corporate units that include one or more warrants as part of the corporate unit, this element represents the warrant's exercise price per share of restricted common stock.

+ References

No definition available.

+ Details

Name:	bnet_WarrantComponentOfCorporateUnitExercisePricePerShareOfRestrictedCommonStock
Namespace Prefix:	bnet_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

With regard to equity units which include one or more warrants as part of the corporate unit, this element represents the number of shares of restricted common stock that may be purchased by each warrant.

+ References

No definition available.

+ Details

Name:	bnet_WarrantComponentOfEquityUnitNumberOfSharesOfRestrictedCommonStockCalledByEachWarrant
Namespace Prefix:	bnet_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(i)(4))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

Name:	us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash inflow associated with the amount received from holders exercising their stock warrants.

+ References

No definition available.

+ Details

Name:	us-gaap_ProceedsFromWarrantExercises
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

+ References

No definition available.

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Per share or per unit amount of equity securities issued.

+ References

No definition available.

+ Details

Name:	us-gaap_SharesIssuedPricePerShare
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of shares issued in lieu of cash for services contributed to the entity. Number of shares includes, but is not limited to, shares issued for services contributed by vendors and founders.

+ References

No definition available.

+ Details

Name:	us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of new stock issued during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Value of stock issued in lieu of cash for services contributed to the entity. Value of the stock issued includes, but is not limited to, services contributed by vendors and founders.

+ References

No definition available.

+ Details

Name:	us-gaap_StockIssuedDuringPeriodValueIssuedForServices
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	us-gaap_TitleOfIndividualAxis=bnet_EmployeesAndConsultantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TitleOfIndividualAxis=bnet_Consultants1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementEquityComponentsAxis=us-gaap_CommonStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
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Period Type: