Loss Contingencies Arising From Representations And Warranties of Our Discontinued Mortgage Operations (Details) - SCC [Member] - USD ($) $ in Thousands	6 Months Ended
	Oct. 31, 2016	Oct. 31, 2015
Loss Contingency Accrual [Roll Forward]
Balance, beginning of the period	$ 65,265	$ 149,765
Provisions	235	4,000
Payments	(40,000)	0
Balance, end of the period	$ 25,500	$ 153,765