Incentive Stock Option and Other Equity Plans Schedule of Shares Authorized Under Stock Option Plans by Exercise Price Range (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	Jan. 28, 2012
Range of Exercise Prices, $0 to 5.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range
Options Outstanding, Shares	0
Options Outstanding, Weighted Average Remaining Contractual Life per Share	0
Options Outstanding, Weighted Average Exercise Price per Share	$ 0
Options Exercisable, Shares	0
Options Exercisable, Weighted Average Exercise Price per Share	$ 0
Range of Exercise Prices, $5.01 to 10.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range
Options Outstanding, Shares	102
Options Outstanding, Weighted Average Remaining Contractual Life per Share	1.12
Options Outstanding, Weighted Average Exercise Price per Share	$ 6.59
Options Exercisable, Shares	102
Options Exercisable, Weighted Average Exercise Price per Share	$ 6.59
Range of Exercise Prices, $15.01 to 20.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range
Options Outstanding, Shares	7
Options Outstanding, Weighted Average Remaining Contractual Life per Share	3.14
Options Outstanding, Weighted Average Exercise Price per Share	$ 15.86
Options Exercisable, Shares	7
Options Exercisable, Weighted Average Exercise Price per Share	$ 15.86
Range of Exercie Prices, Total [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range
Options Outstanding, Shares	109
Options Outstanding, Weighted Average Remaining Contractual Life per Share	1.25
Options Outstanding, Weighted Average Exercise Price per Share	$ 7.18
Options Exercisable, Shares	109
Options Exercisable, Weighted Average Exercise Price per Share	$ 7.18