Interest Income And Expense (Schedule Of Interest Income And Expense Of Continuing Operations) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2012	Oct. 31, 2011
Schedule Of Interest Income And Expense [Line Items]
Interest income	$ 9,859	$ 9,921	$ 19,732	$ 20,261
Interest expense	23,390	22,873	45,467	45,809
Mortgage Loans [Member]
Schedule Of Interest Income And Expense [Line Items]
Interest income	4,168	5,151	8,585	10,812
Loans To Franchisees [Member]
Schedule Of Interest Income And Expense [Line Items]
Interest income	2,391	2,525	4,746	4,867
AFS Securities [Member]
Schedule Of Interest Income And Expense [Line Items]
Interest income	1,753	862	3,392	1,723
Other [Member]
Schedule Of Interest Income And Expense [Line Items]
Interest income	1,547	1,383	3,009	2,859
Borrowings [Member]
Schedule Of Interest Income And Expense [Line Items]
Interest expense	21,995	21,114	42,749	42,243
Deposits [Member]
Schedule Of Interest Income And Expense [Line Items]
Interest expense	1,395	1,608	2,718	3,264
FHLB Advances [Member]
Schedule Of Interest Income And Expense [Line Items]
Interest expense		$ 151		$ 302