Interest Income And Expense (Schedule Of Interest Income And Expense Of Continuing Operations) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jan. 31, 2013	Jan. 31, 2012	Jan. 31, 2013	Jan. 31, 2012
Schedule Of Interest Income And Expense [Line Items]
Interest income	$ 38,300	$ 39,476	$ 58,032	$ 59,737
Interest expense	19,428	23,543	64,895	69,352
Emerald Advance Lines Of Credit [Member]
Schedule Of Interest Income And Expense [Line Items]
Interest income	29,314	30,062	30,074	30,297
Mortgage Loans [Member]
Schedule Of Interest Income And Expense [Line Items]
Interest income	4,120	4,948	12,705	15,760
Loans To Franchisees [Member]
Schedule Of Interest Income And Expense [Line Items]
Interest income	2,651	2,694	7,397	7,561
AFS Securities [Member]
Schedule Of Interest Income And Expense [Line Items]
Interest income	1,713	1,283	5,105	3,006
Other [Member]
Schedule Of Interest Income And Expense [Line Items]
Interest income	502	489	2,751	3,113
Borrowings [Member]
Schedule Of Interest Income And Expense [Line Items]
Interest expense	17,642	21,382	60,391	63,625
Deposits [Member]
Schedule Of Interest Income And Expense [Line Items]
Interest expense	1,786	2,011	4,504	5,275
FHLB Advances [Member]
Schedule Of Interest Income And Expense [Line Items]
Interest expense		$ 150		$ 452