Summary Of Significant Accounting Policies Summary Of Significant Accounting Policies (Schedule Of Accounts Receivable, Net) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	$ 249,890	$ 222,583
Other Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	17,456	16,672
Credit card companies [Member] | Trade Accounts Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	29,393	25,518
Flexpay and other customer-related [Member] | Trade Accounts Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	$ 203,041	$ 180,393