Summary of Significant Accountin Policies (Tables)
 12 Months Ended
Feb. 02, 2013
Summary of Significant Accounting Policies [Abstract]  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
The following table presents the Company's assets measured at fair value on a recurring basis as of February 2, 2013 and January 28, 2012, aggregated by the level in the fair value hierarchy within which those measurements fall.
 
 
February 2, 2013
 
Level 1
Level 2
Level 3
 
(in thousands)
U.S. treasury securities money market funds
$
236,086

$
—

$
—

 
 
 
January 28, 2012
 
Level 1
Level 2
Level 3
 
(in thousands)
U.S. treasury securities money market funds
$
131,543

$
—

$
—
Schedule of Depreciable Lives [Table Text Block]
Property and equipment are stated at cost. Depreciation of property and equipment is computed on a straight-line basis, using the following useful lives:
 
Category
 
Depreciable Life
 
Software, including software developed for internal use
3 - 7 years
Store related assets and other property and equipment
3 - 10 years
Furniture, fixtures and equipment
5 - 7 years
Leasehold improvements
Shorter of lease term or useful life of the asset, typically no longer than 15 years
Schedule of Revenue from External Customers by Channel [Table Text Block]
The following is information regarding the Company's sales channels:
 
2012
 
2011
 
2010
 
(in thousands)
Stores
$
1,851,527

 
$
1,846,323

 
$
1,740,818

E-commerce
271,497

 
205,489

 
147,535

Other revenue
25,045

 
21,543

 
17,461

Total net sales
$
2,148,069

 
$
2,073,355

 
$
1,905,814