v2.4.0.6
Investments And Restricted Investments (Maturities Of Investment Securities) (Details) (USD $)
In Thousands, unless otherwise specified
Apr. 28, 2012
Jan. 28, 2012
Apr. 30, 2011
Investments and Restricted Investments [Line Items]      
Total, Cost basis $ 10,736 $ 10,934 $ 14,720
Total, Estimated fair value 11,700 11,911 15,466
Investments [Member]
      
Investments and Restricted Investments [Line Items]      
Maturing in one year or less, Cost basis 450    
Maturing after one year through five years, Cost basis 4,066    
Maturing after five years through ten years, Cost basis 1,099    
Total, Cost basis 5,615 5,808  
Maturing in one year or less, Estimated fair value 463    
Maturing after one year through five years, Estimated fair value 4,274    
Maturing after five through ten years, Estimated fair value 1,340    
Total, Estimated fair value 6,077 6,260  
Restricted Investments [Member]
      
Investments and Restricted Investments [Line Items]      
Maturing in one year or less, Cost basis 248    
Maturing after one year through five years, Cost basis 1,954    
Maturing after five years through ten years, Cost basis 2,919    
Total, Cost basis 5,121 5,126  
Maturing in one year or less, Estimated fair value 258    
Maturing after one year through five years, Estimated fair value 2,138    
Maturing after five through ten years, Estimated fair value 3,227    
Total, Estimated fair value $ 5,623 $ 5,651