Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e9038-108599

+ Details

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

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

+ Details

Name:	us-gaap_Revenues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(a))
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

+ Details

Name:	us-gaap_SalesRevenueGoodsNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- 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

No definition available.

+ Details

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

- Details

Name:	us-gaap_StatementGeographicalAxis=country_US
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementGeographicalAxis=cal_FarEastMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementGeographicalAxis=country_CA
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementGeographicalAxis=cal_LatinAmericaEuropeAndOtherMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Business Segment Information (Schedule of Net Sales and Long-Lived Assets by Geographic Area) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jan. 30, 2016	Oct. 31, 2015	Aug. 01, 2015	May. 02, 2015	Jan. 31, 2015	Nov. 01, 2014	Aug. 02, 2014	May. 03, 2014	Jan. 30, 2016	Jan. 31, 2015	Feb. 01, 2014
Segment Reporting Information [Line Items]
Revenues									$ 100,186	$ 114,408	$ 132,596
Net sales	$ 608,674	$ 728,639	$ 637,834	$ 602,283	$ 615,393	$ 729,277	$ 635,877	$ 591,162	2,577,430	2,571,709	2,513,113
Long-Lived Assets	428,258				424,179				428,258	424,179	354,262
UNITED STATES
Segment Reporting Information [Line Items]
Revenues									2,342,590	2,318,530	2,258,605
Long-Lived Assets	417,198				412,822				417,198	412,822	344,413
Far East [Member]
Segment Reporting Information [Line Items]
Revenues									177,654	194,296	193,725
Long-Lived Assets	2,193				2,336				2,193	2,336	2,454
CANADA
Segment Reporting Information [Line Items]
Revenues									57,186	58,883	60,783
Long-Lived Assets	8,596				8,773				8,596	8,773	7,159
Latin America Europe And Other [Member]
Segment Reporting Information [Line Items]
Long-Lived Assets	$ 271				$ 248				$ 271	$ 248	$ 236