Note 8 - Subscription Receivable - Affiliates (Details Textual) - USD ($)	3 Months Ended
Sep. 30, 2020	Jun. 30, 2020
Minimum [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 0.60
Maximum [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	2
Warrants with Extended Expiration Dates [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 0.75
Chief Executive Officer [Member] \| Warrants Issused, Subscription Receivable [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in 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 (in dollars per share)	$ 0.60
Chief Executive Officer [Member] \| Warrants Issused, Subscription Receivable [Member] \| Maximum [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 1
Chief Executive Officer [Member] \| Secured Promissory Note [Member]
Financing Receivable, Principal Amount	$ 428,250
Financing Receivable, after Allowance for Credit Loss, Total	$ 470,575
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 (in shares)	928,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 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	$ 51,770
Financing Receivable, Interest Rate, Stated Percentage		4.00%
President [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 0.75
President [Member] \| Warrants Issused, Subscription Receivable [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)		300,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 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	$ 32,594
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://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644

+ 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

+ 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=121599337&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=120391452&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=121593590&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:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- 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:
Period Type:

- Details

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

- Details

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