Annual report pursuant to Section 13 and 15(d)

Summary Of Significant Accounting Policies (Narrative) (Details)

v2.4.0.6
Summary Of Significant Accounting Policies (Narrative) (Details) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Summary Of Significant Accounting Policies [Line Items]      
Estimated return rates 17.80% 18.50% 17.90%
Collection period of receivables from customer, days 30 days    
Accounts receivable, net $ 249,890,000 $ 222,583,000  
General and administrative overhead costs in inventories 6,200,000 5,400,000  
General and administrative cost in inventory 24,300,000 20,900,000 17,600,000
Capitalized software costs, net of accumulated amortization 21,600,000 23,000,000  
Amortization expense related to the capitalized software costs 12,700,000 13,100,000 14,200,000
Capitalized advertising costs 19,100,000 19,800,000  
Advertising expense 245,000,000 215,500,000 183,400,000
Percentage of likeliness of income tax being realized 50.00%    
Unmailed Catalogs [Member]
      
Summary Of Significant Accounting Policies [Line Items]      
Capitalized advertising costs $ 10,200,000 $ 14,700,000  
Minimum [Member]
      
Summary Of Significant Accounting Policies [Line Items]      
Number of interest-free monthly payments 2 months    
Maximum [Member]
      
Summary Of Significant Accounting Policies [Line Items]      
Number of interest-free monthly payments 6 months    
Maximum [Member] | Capitalized Software [Member]
      
Summary Of Significant Accounting Policies [Line Items]      
Estimated useful life 5 years