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, 2015	Oct. 31, 2014	Oct. 31, 2015	Oct. 31, 2014
Schedule Of Interest Income And Expense [Line Items]
Other Nonoperating Income	$ 10,505	$ 0	$ 10,938	$ 523
Interest expense on borrowings	(14,181)	(13,843)	(22,756)	(27,638)
Other income, net	(210)	(2,282)	(5,195)	(3,486)
Mortgage Loans, Net
Schedule Of Interest Income And Expense [Line Items]
Other Nonoperating Income	34	0	34	0
AFS Securities
Schedule Of Interest Income And Expense [Line Items]
Other Nonoperating Income	8,768	0	8,768	0
Other
Schedule Of Interest Income And Expense [Line Items]
Other Nonoperating Income	1,703	0	2,136	523
Borrowings
Schedule Of Interest Income And Expense [Line Items]
Interest expense on borrowings		(1,807)	(4,622)	(1,807)
Other income, net	(23)
Deposits
Schedule Of Interest Income And Expense [Line Items]
Interest Expense, Deposits		$ (475)	$ (573)	$ (1,679)
Other income, net	$ (187)