Summary of Significant Accounting Policies - Returns and Disaggregation of Revenue (Details) - USD ($) $ in Millions	12 Months Ended
Feb. 03, 2024	Jan. 28, 2023	Jan. 29, 2022
Revenue, initial application period, cumulative effect transition
Period of time company allows customers to return merchandise	30 days
Estimated refund liability	$ 0.2	$ 0.3
Carrying value of return asset	0.1	0.1
Distribution center costs	$ 31.0	$ 26.3	$ 24.9
Ladies
Revenue, initial application period, cumulative effect transition
Revenue from contracts with customers disaggregated by major product line (as a percent)	27.00%	26.00%	26.00%
Kids
Revenue, initial application period, cumulative effect transition
Revenue from contracts with customers disaggregated by major product line (as a percent)	23.00%	23.00%	22.00%
Accessories & Beauty
Revenue, initial application period, cumulative effect transition
Revenue from contracts with customers disaggregated by major product line (as a percent)	17.00%	18.00%	18.00%
Mens
Revenue, initial application period, cumulative effect transition
Revenue from contracts with customers disaggregated by major product line (as a percent)	17.00%	17.00%	18.00%
Home & Lifestyle
Revenue, initial application period, cumulative effect transition
Revenue from contracts with customers disaggregated by major product line (as a percent)	9.00%	8.00%	9.00%
Footwear
Revenue, initial application period, cumulative effect transition
Revenue from contracts with customers disaggregated by major product line (as a percent)	7.00%	8.00%	7.00%

Represents the amount of distribution center costs.

No definition available.

Name:	ctrn_DistributionCenterCosts
Namespace Prefix:	ctrn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Percentage, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

No definition available.

+ Details

Name:	ctrn_PercentageRevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix:	ctrn_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The period of time the Company allows customers to return merchandise.

+ References

No definition available.

+ Details

Name:	ctrn_PeriodCustomersCanReturnMerchandise
Namespace Prefix:	ctrn_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of liability for consideration received or receivable from customer which is not included in transaction price, when consideration is expected to be refunded to customer, classified as current.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 27
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479777/606-10-55-27

+ Details

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

- Definition

Amount of right to recover product from customer on settling refund liability, classified as current.

+ References

+ Details

Name:	us-gaap_ContractWithCustomerRightToRecoverProductCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- 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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 15
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482635/260-10-55-15

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-12

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-8

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-9

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-11

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-11

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-7

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-7

+ Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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