Other Income And Other Expenses (Schedule Of Interest Income And Expense Of Continuing Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2018	Jan. 31, 2017
Schedule Of Interest Income And Expense [Line Items]
Other income (expense), net	$ 1,028	$ 134	$ 3,259	$ 4,948
Mortgage loans and real estate owned, net
Schedule Of Interest Income And Expense [Line Items]
Other income (expense), net	0	(377)	0	2,668
Interest income
Schedule Of Interest Income And Expense [Line Items]
Other income (expense), net	699	574	3,454	2,364
Foreign currency gains (losses), net
Schedule Of Interest Income And Expense [Line Items]
Other income (expense), net	21	80	35	53
Other, net
Schedule Of Interest Income And Expense [Line Items]
Other income (expense), net	$ 308	$ (143)	$ (230)	$ (137)