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Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Nov. 01, 2025	Nov. 02, 2024	Feb. 01, 2025
Supplemental Cash Flow Elements [Abstract]
Non-cash investing activities - change in unpaid purchases of property, plant and equipment	$ (835)	$ 1,027
Current liability for unpaid purchases of property, plant and equipment	2,865		$ 2,030
Cash paid for income taxes	$ 45,814	$ 42,635

X

- Definition

The portion of accounts payable that is owed to property, plant and equipment vendors, including construction contractors, which is scheduled for payment within twelve months after the balance sheet date, and which will be reported in investing activities when paid.

+ References

No definition available.

+ Details

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Namespace Prefix:	bke_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The net change during the period in the carrying amount of liabilities that arose from prior and current period purchases of property plant and equipment.

+ References

No definition available.

+ Details

Name:	bke_NonCashInvestingActivitiesIncreaseDecreaseInUnpaidPurchasesOfPropertyPlantAndEquipment
Namespace Prefix:	bke_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount, after refund, of cash paid to foreign, federal, state, and local jurisdictions as income tax.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482913/230-10-50-2A

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 23
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-23

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-22

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482913/230-10-50-2

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- References

No definition available.

+ Details

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