Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

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-Section 50

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-Section S99

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-Name Regulation S-X (SX)

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- Definition

The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-SubTopic 10

-Section 50

-Paragraph 1

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-Section 45

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- Definition

Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Summary of Significant Accounting Policies (Property and Equipment) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense	$ 17,202us-gaap_DepreciationAndAmortization	$ 13,469us-gaap_DepreciationAndAmortization	$ 9,599us-gaap_DepreciationAndAmortization
Property and equipment, gross	146,383us-gaap_PropertyPlantAndEquipmentGross	114,378us-gaap_PropertyPlantAndEquipmentGross
Less: Accumulated depreciation and amortization	(59,385)	(43,997)
Property and equipment, net	86,998us-gaap_PropertyPlantAndEquipmentNet	70,381us-gaap_PropertyPlantAndEquipmentNet
Furniture and fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	54,933	44,112
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	10 years
Property and equipment, gross	64,109	51,736
Computer and equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	20,017	15,903
Construction in process [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 7,324	$ 2,627
Minimum [Member] \| Furniture and fixtures [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	3 years
Maximum [Member] \| Furniture and fixtures [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	10 years