Management Fee Expense, Annual, Maximum

No definition available.

Name:	boxl_ManagementFeeExpenseAnnualMaximum
Namespace Prefix:	boxl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Percentage of annual management fee payable in cash

+ References

No definition available.

+ Details

Name:	boxl_PercentageOfAnnualManagementFeePayableInCash
Namespace Prefix:	boxl_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of monthly fixed payment for services with related party during the financial reporting period.

+ References

No definition available.

+ Details

Name:	boxl_RelatedPartyTransactionMonthlyFixedPaymentForServices
Namespace Prefix:	boxl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Percentage of commission on gross profit derived on total purchase order revenue.

+ References

No definition available.

+ Details

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Namespace Prefix:	boxl_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Period over which the Management Agreement pays after employment termination, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	boxl_TermManagementAgreementPaysAfterTermination
Namespace Prefix:	boxl_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of transactions with related party during the financial reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483326/850-10-50-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483326/850-10-50-3

+ Details

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

- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(c)(2)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(c)(2)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1

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-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(g)(3))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1

+ Details

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

- Details

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Namespace Prefix:
Data Type:	na
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- Details

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- Details

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Namespace Prefix:
Data Type:	na
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Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_RelatedPartyMember
Namespace Prefix:
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RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Thousands			3 Months Ended
	Nov. 01, 2022	Jan. 31, 2018	Mar. 31, 2024	Mar. 31, 2023
Sales, marketing, management and related consulting services \| Mark Elliott
Related Party Transaction [Line Items]
Related party transaction, monthly fixed payment for services	$ 4
Related party transaction, percentage of commission on gross profit derived on total purchase order revenue	15.00%
Related party transaction amounts			$ 79	$ 12
Management Agreement
Related Party Transaction [Line Items]
Related party transaction amounts			$ 109
Management Agreement \| Related Party
Related Party Transaction [Line Items]
Period over which Management Agreement pays after employment termination (in months)		13 months
Management fee percentage		0.375%
Maximum annual management fee		$ 250