Commitments And Contingencies (Narrative) (Details) (USD $)	Oct. 31, 2014	Apr. 30, 2014	Oct. 31, 2013
Commitments And Contingencies [Line Items]
Standard guarantee accrual amount	$ 10,700,000	$ 11,400,000	$ 16,700,000
Contingent business acquisition obligations	10,555,000	9,206,000
Lines of credit, total obligation	81,000,000
Remaining franchise equity lines of credit-undrawn commitment	34,500,000
Maximum funding by facility	1,500,000,000
Financing Receivables, Line of Credit Facility, Compensating Balances	0
Level 3
Commitments And Contingencies [Line Items]
Contingent business acquisition obligations			$ 12,454,000