Receivables (Schedule Of Receivables Based On Year Of Origination) (Details) (Emerald Advance lines of credit, USD $) In Thousands, unless otherwise specified	Apr. 30, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, Net	$ 24,439
Year Of Origination2014 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, Net	6,065
Year Of Origination2013 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, Net	1,890
Year Of Origination 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, Net	4,677
Revolving Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, Net	$ 11,807