Share-Based Compensation (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Nov. 05, 2012 Installments	Nov. 07, 2011	Nov. 05, 2012 Installments	Nov. 07, 2011
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense related to Units that contain performance conditions	$ 0	$ 555	$ 1,295	$ 1,802
Share-based compensation expense related to all other Units	1,064	508	2,250	1,729
Total share-based compensation expense	1,064	1,063	3,545	3,531
Number of vesting periods for performance vesting Units converted to time vesting Units	2		2
Maximum [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Maximum unrecognized compensation cost for all unvested Units	$ 6,619		$ 6,619