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Fair Value of Financial Instruments (Details) - Schedule of gains on designated derivatives reclassified - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Derivatives designated as cash flow hedging instruments:
Cost of revenues		$ (6)
Sales and marketing		(3)
General and administrative		(1)
Total loss		$ (10)

X

- Definition

Cost of revenues.

+ References

No definition available.

+ Details

Name:	bosc_CostOfRevenues1
Namespace Prefix:	bosc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	bosc_DerivativesDesignatedAsCashFlowHedgingInstrumentsAbstract
Namespace Prefix:	bosc_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The aggregate total amount of expenses directly related to the marketing or selling of products or services.

+ References

No definition available.

+ Details

Name:	bosc_SalesAndMarketing1
Namespace Prefix:	bosc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	bosc_TotalLoss
Namespace Prefix:	bosc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount of general and administrative expense classified as other.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.4)
-URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227

+ Details

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