Recent Accounting Pronouncements (Details) - New Accounting Pronouncement ASU 2016-02 not yet adopted	3 Months Ended
Apr. 29, 2017 lease
Number of leases	538
Average remaining contractual rent period	3 years 1 month 6 days
Minimum
Minimum lease term	12 months

The average remaining contractual rent period in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

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