Other Income And Other Expenses (Schedule Of Interest Income And Expense Of Continuing Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2017	Oct. 31, 2016
Schedule Of Interest Income And Expense [Line Items]
Other income (expense), net	$ 1,011	$ 2,173	$ 2,231	$ 4,814
Mortgage loans and real estate owned, net
Schedule Of Interest Income And Expense [Line Items]
Other income (expense), net	0	1,508	0	3,045
Interest income
Schedule Of Interest Income And Expense [Line Items]
Other income (expense), net	1,311	693	2,755	1,790
Foreign currency gains (losses), net
Schedule Of Interest Income And Expense [Line Items]
Other income (expense), net	(117)	(6)	14	(27)
Other, net
Schedule Of Interest Income And Expense [Line Items]
Other income (expense), net	$ (183)	$ (22)	$ (538)	$ 6