Loss Contingencies Arising From Representations And Warranties of Our Discontinued Mortgage Operations (Details) - SCC [Member] - USD ($) $ in Thousands	9 Months Ended
	Jan. 31, 2017	Jan. 31, 2016
Loss Contingency Accrual [Roll Forward]
Balance, beginning of the period	$ 65,265	$ 149,765
Provisions	235	4,000
Payments	(61,000)	(88,500)
Balance, end of the period	$ 4,500	$ 65,265