Note 9 - Subscription Receivable - Affiliates (Details Textual)	3 Months Ended
Sep. 30, 2019 USD ($) $ / shares shares
Minimum [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights \| $ / shares	$ 0.60
Maximum [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights \| $ / shares	$ 2
Chief Executive Officer [Member] \| Warrants Issused, Subscription Receivable [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights \| shares	5,565,000
Chief Executive Officer [Member] \| Warrants Issused, Subscription Receivable [Member] \| Minimum [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights \| $ / shares	$ 0.60
Chief Executive Officer [Member] \| Warrants Issused, Subscription Receivable [Member] \| Maximum [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights \| $ / shares	$ 1
Chief Executive Officer [Member] \| Secured Promissory Note [Member]
Financing Receivable, Principal Amount	$ 428,250
Financing Receivable, after Allowance for Credit Loss, Total	$ 453,445
Financing Receivable, Interest Rate, Stated Percentage	4.00%
Former Employee [Member] \| Warrants Issused, Subscription Receivable [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights \| shares	928,000
Class of Warrant or Right, Exercise Price of Warrants or Rights \| $ / shares	$ 0.75
Class of Warrant or Right, Exercise Bonus, Percentage	90.00%
Former Employee [Member] \| Secured Promissory Note [Member]
Financing Receivable, Principal Amount	$ 46,400
Financing Receivable, after Allowance for Credit Loss, Total	$ 49,914
Financing Receivable, Interest Rate, Stated Percentage	4.00%
President [Member] \| Warrants Issused, Subscription Receivable [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights \| shares	300,000
Class of Warrant or Right, Exercise Price of Warrants or Rights \| $ / shares	$ 0.60
Class of Warrant or Right, Exercise Bonus, Percentage	75.00%
President [Member] \| Secured Promissory Note [Member]
Financing Receivable, Principal Amount	$ 30,000
Financing Receivable, after Allowance for Credit Loss, Total	$ 31,394
Financing Receivable, Interest Rate, Stated Percentage	4.00%
Financing Receivable, Collateral	$ 30,000

The percentage of exercise bonus for the warrants.

No definition available.

Name:	bnet_ClassOfWarrantOrRightExerciseBonusPercentage
Namespace Prefix:	bnet_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of collateral attached to the financing receivable.

+ References

No definition available.

+ Details

Name:	bnet_FinancingReceivableCollateral
Namespace Prefix:	bnet_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Contractual interest rate for financing receivable, under the agreement.

+ References

No definition available.

+ Details

Name:	bnet_FinancingReceivableInterestRateStatedPercentage
Namespace Prefix:	bnet_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The principal amount of financing receivable.

+ References

No definition available.

+ Details

Name:	bnet_FinancingReceivablePrincipalAmount
Namespace Prefix:	bnet_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-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

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(i)(2))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

Name:	us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919230-210447

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=118952595&loc=d3e4428-111522

+ Details

Name:	us-gaap_NotesReceivableNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
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Balance Type:
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- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
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Balance Type:
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- Details

Name:	srt_TitleOfIndividualAxis=srt_ChiefExecutiveOfficerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=bnet_WarrantsIssusedSubscriptionReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=bnet_SecuredPromissoryNoteMember
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	srt_TitleOfIndividualAxis=bnet_FormerEmployeeMember
Namespace Prefix:
Data Type:	na
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- Details

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Namespace Prefix:
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