Organizational change costs.

No definition available.

Name:	cal_OrganizationalChangeCosts
Namespace Prefix:	cal_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Organizational change costs after tax.

+ References

No definition available.

+ Details

Name:	cal_OrganizationalChangeCostsAfterTax
Namespace Prefix:	cal_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Organizational change costs per diluted share.

+ References

No definition available.

+ Details

Name:	cal_OrganizationalChangeCostsPerDilutedShare
Namespace Prefix:	cal_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Promissory note interest rate.

+ References

No definition available.

+ Details

Name:	cal_PromissoryNoteInterestRate
Namespace Prefix:	cal_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Restructuring costs and asset impairment charges after-tax.

+ References

No definition available.

+ Details

Name:	cal_RestructuringCostsAndAssetImpairmentChargesAfterTax
Namespace Prefix:	cal_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Restructuring costs and asset impairment charges per diluted share.

+ References

No definition available.

+ Details

Name:	cal_RestructuringCostsAndAssetImpairmentChargesPerDilutedShare
Namespace Prefix:	cal_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Sale price of certain supply chain and sourcing assets, aggregate amount.

+ References

No definition available.

+ Details

Name:	cal_SalePriceOfCertainSupplyChainAndSourcingAssetsAggregateAmount
Namespace Prefix:	cal_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

An amount representing an agreement for an unconditional promise by the maker to pay the Company (holder) a definite sum of money within one year from the balance sheet date (or the normal operating cycle, whichever is longer), net of any write-downs taken for collection uncertainty on the part of the holder. Such amount may include accrued interest receivable in accordance with the terms of the debt. The debt also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. This amount does not include amounts related to receivables held-for-sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4531-111522

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.3)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765

+ Details

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

- Definition

The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3179-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

+ Details

Name:	us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of restructuring cost.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 5.P.4(b))
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 5
-Section P
-Subsection 3, 4

+ Details

Name:	us-gaap_RestructuringAndRelatedCostIncurredCost
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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_RestructuringCostAndReserveLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan and expenses resulting from the write-down of assets. Excludes expenses related to a business combination, a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

+ Details

Name:	us-gaap_RestructuringCostsAndAssetImpairmentCharges
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

+ Details

Name:	us-gaap_RestructuringReserve
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=cal_SupplyChainAndSourcingAssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	cal_SaleProceedsAxis=us-gaap_CashMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	cal_SaleProceedsAxis=us-gaap_NotesReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=cal_SubsequentQuarterlyInstallmentPaymentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementOperatingActivitiesSegmentAxis=us-gaap_SegmentContinuingOperationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=cal_BrandPortfolioMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=cal_Shoes.comMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Restructuring And Other Initiatives (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended	12 Months Ended
	Dec. 12, 2014	Apr. 30, 2013	May. 04, 2013	Jan. 30, 2016	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Restructuring and Related Cost [Line Items]
Portfolio realignment costs						$ 30,700
Proceeds from sale of manufacturing facilities				$ 7,433	$ 0	0
Organizational change costs					1,900
Organizational Change Costs After Tax					$ 1,200
Organizational Change Costs Per Diluted Share					$ 0.03
Restructuring Reserve				700	$ 1,100	2,400	$ 5,500
Supply Chain and Sourcing Assets [Member]
Restructuring and Related Cost [Line Items]
Sale price of certain supply chain and sourcing assets, aggregate amount		$ 9,000
Cash [Member] \| Supply Chain and Sourcing Assets [Member]
Restructuring and Related Cost [Line Items]
Proceeds from sale of manufacturing facilities		1,500
Promissory Note [Member] \| Supply Chain and Sourcing Assets [Member]
Restructuring and Related Cost [Line Items]
Note receivable		$ 7,500
Promissory Note [Member] \| Subsequent Quarterly Installment Payments [Member]
Restructuring and Related Cost [Line Items]
Promissory note interest rate		5.00%
Continuing Operations [Member]
Restructuring and Related Cost [Line Items]
Portfolio realignment costs						5,900
Impairment charge			$ 4,700			4,700
Impairment charge, after tax			$ 4,700			$ 4,700
Impairment charge, per diluted share			$ 0.11			$ 0.11
Restructuring Reserve				$ 700	1,100	$ 1,500	$ 5,300
Brand Portfolio [Member] \| Continuing Operations [Member]
Restructuring and Related Cost [Line Items]
Portfolio realignment costs						$ 5,900
Shoes.com [Member]
Restructuring and Related Cost [Line Items]
Portfolio realignment costs	$ 1,500
Note receivable	$ 7,500
Promissory note interest rate	6.00%
Restructuring Reserve					$ 1,500
Shoes.com [Member] \| Brand Portfolio [Member]
Restructuring and Related Cost [Line Items]
Portfolio realignment costs	$ 300