Accounts Receivable, Construction Segment

No definition available.

Name:	dds_AccountsReceivableConstructionSegment
Namespace Prefix:	dds_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Billings in excess of costs and estimated earnings on uncompleted contracts, construction segment

+ References

No definition available.

+ Details

Name:	dds_BillingsInExcessOfCostsAndEstimatedEarningsOnUncompletedContractsConstructionSegment
Namespace Prefix:	dds_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Costs and estimated earnings in excess of billings on uncompleted contracts, construction segment

+ References

No definition available.

+ Details

Name:	dds_CostsAndEstimatedEarningsInExcessOfBillingsOnUncompletedContractsConstructionSegment
Namespace Prefix:	dds_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the number of store formats across all stores.

+ References

No definition available.

+ Details

Name:	dds_NumberOfStoreFormats
Namespace Prefix:	dds_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Revenue Recognized, previously recorded in Billings in excess of costs and estimated earnings

+ References

No definition available.

+ Details

Name:	dds_RevenueRecognizedPreviouslyRecordedInBillingsInExcessOfCostsAndEstimatedEarnings
Namespace Prefix:	dds_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-42

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 20
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-20

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

+ Details

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-11

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479837/606-10-45-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-8

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479837/606-10-45-2

+ Details

Name:	us-gaap_ContractWithCustomerLiability
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-8

+ Details

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

- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 47
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-47

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 54
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-54

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-18

+ Details

Name:	us-gaap_NumberOfReportableSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (a)
-SubTopic 10
-Topic 606
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-13

+ Details

Name:	us-gaap_RevenueRemainingPerformanceObligation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

Name:	us-gaap_SegmentReportingDisclosureOfEntitysReportableSegmentsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
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

No definition available.

+ Details

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

- Details

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

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=us-gaap_ProductConcentrationRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_SalesRevenueProductLineMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	srt_ProductOrServiceAxis=dds_CosmeticsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=dds_LadiesApparelMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=dds_LadiesAccessoriesAndLingerieMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=dds_JuniorsAndChildrensApparelMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=dds_MensApparelAndAccessoriesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=dds_ShoesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=dds_HomeAndFurnitureMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Business Segments - Percentage of net sales by segment and major product line (Details) $ in Thousands	3 Months Ended
	May 02, 2026 USD ($) segment	May 03, 2025 USD ($)	Jan. 31, 2026 USD ($)	Feb. 01, 2025 USD ($)
Business Segments
Number of reportable segments \| segment	2
Concentration Risk, Percentage	100.00%	100.00%
Retail Operations
Business Segments
Number of reportable segments \| segment	1
Number of store formats \| segment	1
Contract liabilities	$ 70,654	$ 67,407	$ 78,386	$ 76,667
Contract liabilities, revenue recognized	$ 22,700	$ 22,600
Retail Operations \| Product Concentration Risk \| Revenue, Product and Service Benchmark
Business Segments
Concentration Risk, Percentage	97.00%	96.00%
Construction
Segment Reporting
Accounts Receivable, Construction Segment	$ 39,953	$ 51,903	30,598	46,646
Costs and estimated earnings in excess of billings on uncompleted contracts, construction segment	1,617	2,019	2,018	3,913
Billings in excess of costs and estimated earnings on uncompleted contracts, construction segment	9,490	10,107	4,493	$ 6,983
Revenue Recognized, previously recorded in Billings in excess of costs and estimated earnings	3,700	6,300
Revenue, Remaining Performance Obligation, Amount, construction segment	$ 176,900	$ 173,900	$ 140,800
Construction \| Product Concentration Risk \| Revenue, Product and Service Benchmark
Business Segments
Concentration Risk, Percentage	3.00%	4.00%
Cosmetics \| Retail Operations \| Product Concentration Risk \| Revenue, Product and Service Benchmark
Business Segments
Concentration Risk, Percentage	15.00%	15.00%
Ladies' apparel \| Retail Operations \| Product Concentration Risk \| Revenue, Product and Service Benchmark
Business Segments
Concentration Risk, Percentage	23.00%	23.00%
Ladies' accessories and lingerie \| Retail Operations \| Product Concentration Risk \| Revenue, Product and Service Benchmark
Business Segments
Concentration Risk, Percentage	13.00%	12.00%
Juniors' and children's apparel \| Retail Operations \| Product Concentration Risk \| Revenue, Product and Service Benchmark
Business Segments
Concentration Risk, Percentage	10.00%	11.00%
Men's apparel and accessories \| Retail Operations \| Product Concentration Risk \| Revenue, Product and Service Benchmark
Business Segments
Concentration Risk, Percentage	18.00%	18.00%
Shoes \| Retail Operations \| Product Concentration Risk \| Revenue, Product and Service Benchmark
Business Segments
Concentration Risk, Percentage	15.00%	14.00%
Home and furniture \| Retail Operations \| Product Concentration Risk \| Revenue, Product and Service Benchmark
Business Segments
Concentration Risk, Percentage	3.00%	3.00%