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Note 2 - Revenue (Details Textual)	3 Months Ended	9 Months Ended
	Oct. 31, 2020	Oct. 31, 2020
Gift Card Redemption Period (Year)		3 years
Estimated Percentage of Gift Card Redemptions Within First Twelve Months		75.00%
Direct to Consumer [Member]
Segment Revenue of Consolidated Revenue, Percentage	97.00%
International Franchising [Member]
Capitalized Contract Cost, Amortization Period (Year)	25 years	25 years

X

- Definition

The estimated percentage of gift card that would redeem within first twelve months.

+ References

No definition available.

+ Details

Name:	bbw_EstimatedPercentageOfGiftCardRedemptionsWithinFirstTwelveMonths
Namespace Prefix:	bbw_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The redemption period of gift card.

+ References

No definition available.

+ Details

Name:	bbw_GiftCardRedemptionPeriod
Namespace Prefix:	bbw_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The percentage of a segment revenue of consolidated revenue.

+ References

No definition available.

+ Details

Name:	bbw_SegmentRevenueOfConsolidatedRevenuePercentage
Namespace Prefix:	bbw_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amortization period of cost capitalized in obtaining or fulfilling contract with customer, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 340
-SubTopic 40
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131251-203054

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=bbw_DirectToConsumerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=bbw_InternationalFranchisingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: