Mortgage Loans Held For Investment And Related Assets (Schedule Of Past Due Mortgage Loans) (Details) (USD $) In Thousands, unless otherwise specified	Oct. 31, 2014		Apr. 30, 2014	Oct. 31, 2013
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	$ 258,728		$ 277,423	$ 306,103
Purchased From SCC
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	148,833
All Other
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	109,895
Less than 60 Days Past Due
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	15,812
Less than 60 Days Past Due | Purchased From SCC
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	11,199
Less than 60 Days Past Due | All Other
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	4,613
60 – 89 Days Past Due
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	402
60 – 89 Days Past Due | Purchased From SCC
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	324
60 – 89 Days Past Due | All Other
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	78
90 Days Past Due
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	55,044	[1]
90 Days Past Due | Purchased From SCC
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	47,514	[1]
90 Days Past Due | All Other
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	7,530	[1]
Total Past Due
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	71,258
Total Past Due | Purchased From SCC
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	59,037
Total Past Due | All Other
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	12,221
Current
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	187,470
Current | Purchased From SCC
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	89,796
Current | All Other
Mortgage Loans Held For Investment And Related Assets [Line Items]
Total Portfolio	$ 97,674

[1] We do not accrue interest on loans past due 90 days or more.