Recent Accounting Pronouncements (Details)	6 Months Ended
Jul. 29, 2017 lease
Summary of Significant Accounting Policies
Number of leases	545
Average remaining contractual rent period	3 years 1 month 6 days

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