Rialto Investments Segment (Nonaccrual Loans) (Details) (USD $) In Thousands, unless otherwise specified	May 31, 2012	Nov. 30, 2011
Rialto Investments [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Recorded Investment	$ 60,408	$ 73,712
Land [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	40,590	75,557
With Allowance	0	0
Without Allowance	16,694	24,692
Total Recorded Investment	16,694	24,692
Single Family Homes [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	28,458	55,377
With Allowance	1,156	1,956
Without Allowance	14,410	13,235
Total Recorded Investment	15,566	15,191
Commercial Properties [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	35,996	48,293
With Allowance	0	2,660
Without Allowance	22,818	24,434
Total Recorded Investment	22,818	27,094
Multi Family Homes [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	10,928	16,750
With Allowance	0	0
Without Allowance	5,145	6,735
Total Recorded Investment	5,145	6,735
Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	295	405
With Allowance	0	0
Without Allowance	185	0
Total Recorded Investment	185	0
Loans Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	116,267	196,382
With Allowance	1,156	4,616
Without Allowance	59,252	69,096
Total Recorded Investment	$ 60,408	$ 73,712