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Receivables (Schedule Of Receivables Based On Year Of Origination) (Details) (Emerald Advance lines of credit, USD $)
In Thousands, unless otherwise specified
Apr. 30, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]  
Receivables, Net $ 33,037
Year Of Origination 2013
 
Accounts, Notes, Loans and Financing Receivable [Line Items]  
Receivables, Net 11,548
Year Of Origination 2012
 
Accounts, Notes, Loans and Financing Receivable [Line Items]  
Receivables, Net 1,480
Year Of Origination 2011
 
Accounts, Notes, Loans and Financing Receivable [Line Items]  
Receivables, Net 2,412
Year Of Origination 2010 And Prior
 
Accounts, Notes, Loans and Financing Receivable [Line Items]  
Receivables, Net 6,434
Revolving Loans
 
Accounts, Notes, Loans and Financing Receivable [Line Items]  
Receivables, Net $ 11,163