Loss Contingencies Arising From Representations And Warranties of Our Discontinued Mortgage Operations Loss Contingencies Arising From Representations And Warranties of Our Discontinued Mortgage Operations (Details) (SCC [Member], USD $) In Thousands, unless otherwise specified	9 Months Ended
	Jan. 31, 2014	Jan. 31, 2013
SCC [Member]
Loss Contingency Accrual [Roll Forward]
Balance, beginning of the period	$ 158,765	$ 130,018
Provisions	158,765	118,765
Payments	0	(11,253)
Balance, end of the period	$ 0	$ 0