Mortgage Loans Held For Investment And Related Assets (Schedule Of Credit Quality Indicators) (Details) (USD $) In Thousands, unless otherwise specified	Apr. 30, 2014	Apr. 30, 2013
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	$ 277,423	$ 350,235
Occupancy Status, Owner Occupied
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	195,029
Occupancy Status, Non-Owner Occupied
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	82,394
Documentation Level, Full Documentation
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	136,852
Documentation Level, Limited Documentation
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	17,868
Documentation Level, Stated Income
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	101,282
Documentation Level, No Documentation
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	21,421
Internal Risk Rating, High
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	45,688
Internal Risk Rating, Medium
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	113,878
Internal Risk Rating, Low
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	117,857
Purchased From SCC
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	159,566
Purchased From SCC | Occupancy Status, Owner Occupied
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	117,457
Purchased From SCC | Occupancy Status, Non-Owner Occupied
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	42,109
Purchased From SCC | Documentation Level, Full Documentation
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	53,019
Purchased From SCC | Documentation Level, Limited Documentation
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	4,897
Purchased From SCC | Documentation Level, Stated Income
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	88,207
Purchased From SCC | Documentation Level, No Documentation
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	13,443
Purchased From SCC | Internal Risk Rating, High
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	45,688
Purchased From SCC | Internal Risk Rating, Medium
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	113,878
Purchased From SCC | Internal Risk Rating, Low
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio
All Other
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	117,857
All Other | Occupancy Status, Owner Occupied
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	77,572
All Other | Occupancy Status, Non-Owner Occupied
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	40,285
All Other | Documentation Level, Full Documentation
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	83,833
All Other | Documentation Level, Limited Documentation
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	12,971
All Other | Documentation Level, Stated Income
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	13,075
All Other | Documentation Level, No Documentation
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	7,978
All Other | Internal Risk Rating, High
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio
All Other | Internal Risk Rating, Medium
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio
All Other | Internal Risk Rating, Low
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	$ 117,857