Investments And Restricted Investments (Maturities Of Investment And Restricted Investment Securities) (Details) (USD $) In Thousands, unless otherwise specified	Aug. 03, 2013	Feb. 02, 2013	Jul. 28, 2012
Investments and Restricted Investments [Line Items]
Total, Cost basis	$ 7,701	$ 10,099	$ 10,646
Fair value	8,375	11,000	11,648
Investments [Member]
Investments and Restricted Investments [Line Items]
Maturing in one year or less, Cost basis	13
Maturing after one year through five years, Cost basis	3,340
Maturing after five years through ten years, Cost basis	500
Total, Cost basis	3,853	4,991	5,529
Maturing in one year or less, Estimated fair value	13
Maturing after one year through five years, Estimated fair value	3,613
Maturing after five through ten years, Estimated fair value	602
Fair value	4,228	5,461	5,996
Restricted Investments [Member]
Investments and Restricted Investments [Line Items]
Maturing in one year or less, Cost basis	144
Maturing after one year through five years, Cost basis	808
Maturing after five years through ten years, Cost basis	2,896
Total, Cost basis	3,848	5,108	5,117
Maturing in one year or less, Estimated fair value	146
Maturing after one year through five years, Estimated fair value	894
Maturing after five through ten years, Estimated fair value	3,107
Fair value	$ 4,147	$ 5,539	$ 5,652