Receivables (Schedule Of Activity In The Allowance For Doubtful Accounts) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Jan. 31, 2013	Jan. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	$ 44,589	$ 47,943
Provision	40,482	50,632
Charge-offs	(40,242)	(34,436)
Ending balance	44,829	64,139
Emerald Advance Lines Of Credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	6,200	4,400
Provision	25,519	33,570
Ending balance	31,719	37,970
Loans To Franchisees [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Provision	42
Ending balance	42
Credit Cards [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Provision	4,255
Ending balance	4,255
All Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	38,389	43,543
Provision	10,666	17,062
Charge-offs	(40,242)	(34,436)
Ending balance	$ 8,813	$ 26,169