Name:	BNKK_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercisableNumber
Namespace Prefix:	BNKK_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of non-option equity outstanding and currently exercisable under the non-option equity plan.

No definition available.

Name:	BNKK_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercisableWeightedAverageExercisePrice
Namespace Prefix:	BNKK_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of non-option equity.

No definition available.

Name:	BNKK_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGrantsInPeriodWeightedAverageExercisePrice
Namespace Prefix:	BNKK_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

Sharebased compensation arrangement by sharebased payment award nonoption equity instruments grants in period weighted average warrants exercised.

No definition available.

Name:	BNKK_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGrantsInPeriodWeightedAverageWarrantsExercised
Namespace Prefix:	BNKK_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

Share based compensation arrangement by share based payment award non option equity instruments outstanding weighted average exercise price one.

No definition available.

Name:	BNKK_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingWeightedAverageExercisePriceOne
Namespace Prefix:	BNKK_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

Sharebased compensation arrangement by sharebased payment award non option equity instruments warrants exercised

No definition available.

Name:	BNKK_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsWarrantsExercised
Namespace Prefix:	BNKK_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Net number of non-option equity instruments granted to participants.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(01)
-SubTopic 10
-Topic 718
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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

Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(ii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.