Fair Value Measurements (Schedule of Assets Measure at Fair Value on Recurring Basis) (Details) (USD $)	Oct. 27, 2012	Jan. 28, 2012	Oct. 29, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents - money market fund	$ 5,257	$ 25,231	$ 25,218
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents - money market fund	5,257	25,231	25,218
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents - money market fund	0	0	0
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents - money market fund	$ 0	$ 0	$ 0