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Basis of Presentation (Details) - store	12 Months Ended
	Feb. 01, 2020	Feb. 02, 2019	May 04, 2019
Basis of Presentation
Number of stores operated			561
Number of states in which company operates			32
Length of fiscal year	364 days	364 days

X

- Definition

Represents the length of fiscal years of the reporting entity.

+ References

No definition available.

+ Details

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

X

- Definition

The number of states the entity operates in as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfStatesInWhichEntityOperates
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Represents the number of stores.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfStores
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- References

No definition available.

+ Details

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