Management Fee Expense, Annual, Maximum

No definition available.

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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

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

- Definition

Related Party Transaction, Accrued Interest In Event Of Default, Percentage

+ References

No definition available.

+ Details

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

- Definition

Related Party Transaction, Advance Payable Period

+ References

No definition available.

+ Details

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

- Definition

Related Party Transaction, Increase In Outstanding Balance Payable In Event Of Default, Percentage

+ References

No definition available.

+ Details

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

- Definition

Related Party Transaction, Maximum Aggregate Purchase Amount

+ References

No definition available.

+ Details

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Namespace Prefix:	boxl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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

Related Party Transaction, Term

+ References

No definition available.

+ Details

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Namespace Prefix:	boxl_
Data Type:	xbrli:durationItemType
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

+ Details

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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
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+ Details

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

- Definition

Identify the stated interest rate per the agreement, for example, leasing and debt arrangements between related parties.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 850
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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-Subparagraph (b)
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+ Details

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Period Type:	duration

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=boxl_SalesMarketingManagementAndRelatedConsultingServicesMember
Namespace Prefix:
Data Type:	na
Balance Type:
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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

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=boxl_J.J.ASTORMember
Namespace Prefix:
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RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Thousands						6 Months Ended
	Jun. 30, 2025	May 27, 2025	Jan. 04, 2024	Nov. 01, 2022	Jan. 31, 2018	Jun. 30, 2025	Jun. 30, 2024
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						$ 39	$ 79
Management Agreement
Related Party Transaction [Line Items]
Related party transaction amounts						$ 43
Management Agreement \| Related Party
Related Party Transaction [Line Items]
Period over which Management Agreement pays after employment termination (in months)			13 months		13 months
Management fee percentage					0.375%
Maximum annual management fee					$ 250
Inventory Finance Agreement \| J.J. ASTOR \| Related Party
Related Party Transaction [Line Items]
Related party transaction amounts	$ 2,700
Maximum aggregate purchase amount		$ 6,000
Related party transaction term		1 year
Advance payable period		90 days
Related party transaction rate		5.35%
Increase in outstanding balance payable in event of default, percentage		10.00%
Accrued interest percentage in event of default		19.00%