Interest Income And Interest Expense (Schedule Of Interest Income And Expense Of Continuing Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2016	Oct. 31, 2015
Schedule Of Interest Income And Expense [Line Items]
Other income, net	$ 2,180	$ 10,505	$ 5,148	$ 10,938
Interest expense on borrowings	(22,620)	(14,181)	(44,086)	(22,756)
Other income, net	(7)	(210)	(334)	(5,195)
Mortgage Loans, Net
Schedule Of Interest Income And Expense [Line Items]
Other income, net	1,508	34	3,045	34
AFS Securities
Schedule Of Interest Income And Expense [Line Items]
Other income, net	52	8,768	83	8,768
Other
Schedule Of Interest Income And Expense [Line Items]
Other income, net	620	1,703	2,020	2,136
Borrowings
Schedule Of Interest Income And Expense [Line Items]
Interest expense on borrowings		(23)	(27)	(4,622)
Other income, net	(6)
Deposits
Schedule Of Interest Income And Expense [Line Items]
Interest Expense, Deposits		$ (187)	$ (307)	$ (573)
Other income, net	$ (1)