Investments And Restricted Investments (Maturities Of Investment And Restricted Investment Securities) (Details) (USD $) In Thousands, unless otherwise specified	May 04, 2013	Feb. 02, 2013	Apr. 28, 2012
Investments and Restricted Investments [Line Items]
Total, Cost basis	$ 9,737	$ 10,099	$ 10,736
Total, Estimated fair value	10,640	11,000	11,700
Investments [Member]
Investments and Restricted Investments [Line Items]
Maturing in one year or less, Cost basis	1,036
Maturing after one year through five years, Cost basis	2,749
Maturing after five years through ten years, Cost basis	1,099
Total, Cost basis	4,884	4,991	5,615
Maturing in one year or less, Estimated fair value	1,038
Maturing after one year through five years, Estimated fair value	2,965
Maturing after five through ten years, Estimated fair value	1,337
Total, Estimated fair value	5,340	5,461	6,077
Restricted Investments [Member]
Investments and Restricted Investments [Line Items]
Maturing in one year or less, Cost basis	1,144
Maturing after one year through five years, Cost basis	809
Maturing after five years through ten years, Cost basis	2,900
Total, Cost basis	4,853	5,108	5,121
Maturing in one year or less, Estimated fair value	1,158
Maturing after one year through five years, Estimated fair value	917
Maturing after five through ten years, Estimated fair value	3,225
Total, Estimated fair value	$ 5,300	$ 5,539	$ 5,623