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Organization and Business (Details) - item	12 Months Ended
	Feb. 03, 2018	Jan. 28, 2017	Jan. 30, 2016
Organization and Business
Number of stores operated	549
Number of states in which company operates	31
Length of fiscal year	371 days	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