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Note 14 - Related-Party Transactions (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jan. 03, 2015	Dec. 28, 2013	Dec. 29, 2012
Note 14 - Related-Party Transactions (Details) [Line Items]
Related Party Transaction, Purchases from Related Party	$ 0.7us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty	$ 1.3us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty	$ 0.9us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty
Charitable Foundations Controlled By Executive Officers Member] | Charitable Contribution Collected On Behalf Of Related Party [Member]
Note 14 - Related-Party Transactions (Details) [Line Items]
Related Party Transaction, Amounts of Transaction	1.2us-gaap_RelatedPartyTransactionAmountsOfTransaction / us-gaap_RelatedPartyTransactionAxis = bbw_CharitableContributionCollectedOnBehalfOfRelatedPartyMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = bbw_CharitableFoundationsControlledByExecutiveOfficersMember	2.1us-gaap_RelatedPartyTransactionAmountsOfTransaction / us-gaap_RelatedPartyTransactionAxis = bbw_CharitableContributionCollectedOnBehalfOfRelatedPartyMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = bbw_CharitableFoundationsControlledByExecutiveOfficersMember	2.2us-gaap_RelatedPartyTransactionAmountsOfTransaction / us-gaap_RelatedPartyTransactionAxis = bbw_CharitableContributionCollectedOnBehalfOfRelatedPartyMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = bbw_CharitableFoundationsControlledByExecutiveOfficersMember
Charitable Foundations Controlled By Executive Officers Member]
Note 14 - Related-Party Transactions (Details) [Line Items]
Due to Related Parties	$ (0.4)us-gaap_DueToRelatedPartiesCurrentAndNoncurrent / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = bbw_CharitableFoundationsControlledByExecutiveOfficersMember	$ (0.5)us-gaap_DueToRelatedPartiesCurrentAndNoncurrent / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = bbw_CharitableFoundationsControlledByExecutiveOfficersMember

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- Definition

Carrying amount as of the balance sheet date of obligations due all related parties.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(k)(1))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph k

-Subparagraph 1

-Article 4



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.17)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910



Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 17

-Article 7



Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.15(3),(4))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878



Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 15

-Subparagraph 3, 4

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39622-107864



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-Publisher FASB

-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

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+ References

No definition available.

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