Loans Recievable (Loan To Value Ratios Of Residential Loans) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013		Dec. 31, 2012
Less Than Or Equal To 60% [Member] | Maximum [Member]
Loan To Value Ratio Of Residential Loan [Line Items]
Percentage of loan to value ratio	60.00%		60.00%
60.1% - 70% [Member] | Minimum [Member]
Loan To Value Ratio Of Residential Loan [Line Items]
Percentage of loan to value ratio	60.10%		60.10%
60.1% - 70% [Member] | Maximum [Member]
Loan To Value Ratio Of Residential Loan [Line Items]
Percentage of loan to value ratio	70.00%		70.00%
70.1% - 80% [Member] | Minimum [Member]
Loan To Value Ratio Of Residential Loan [Line Items]
Percentage of loan to value ratio	70.10%		70.10%
70.1% - 80% [Member] | Maximum [Member]
Loan To Value Ratio Of Residential Loan [Line Items]
Percentage of loan to value ratio	80.00%		80.00%
80.1% - 90% [Member] | Minimum [Member]
Loan To Value Ratio Of Residential Loan [Line Items]
Percentage of loan to value ratio	80.10%		80.10%
80.1% - 90% [Member] | Maximum [Member]
Loan To Value Ratio Of Residential Loan [Line Items]
Percentage of loan to value ratio	90.00%		90.00%
More Than 90.1% [Member] | Minimum [Member]
Loan To Value Ratio Of Residential Loan [Line Items]
Percentage of loan to value ratio	90.10%		90.10%
Residential-Interest Only [Member]
Loan To Value Ratio Of Residential Loan [Line Items]
Gross loans, by loan to value ratio as of the loan origination date	16,826	[1]	17,798	[2]
Residential-Interest Only [Member] | Less Than Or Equal To 60% [Member]
Loan To Value Ratio Of Residential Loan [Line Items]
Gross loans, by loan to value ratio as of the loan origination date	413	[1],[2]	413	[2]
Residential-Interest Only [Member] | 60.1% - 70% [Member]
Loan To Value Ratio Of Residential Loan [Line Items]
Gross loans, by loan to value ratio as of the loan origination date	392	[1]	945	[2]
Residential-Interest Only [Member] | 70.1% - 80% [Member]
Loan To Value Ratio Of Residential Loan [Line Items]
Gross loans, by loan to value ratio as of the loan origination date	1,790	[1]	1,082	[2]
Residential-Interest Only [Member] | 80.1% - 90% [Member]
Loan To Value Ratio Of Residential Loan [Line Items]
Gross loans, by loan to value ratio as of the loan origination date	2,593	[1]	1,584	[2]
Residential-Interest Only [Member] | More Than 90.1% [Member]
Loan To Value Ratio Of Residential Loan [Line Items]
Gross loans, by loan to value ratio as of the loan origination date	11,638	[1]	13,774	[2]
Residential-Amortizing [Member]
Loan To Value Ratio Of Residential Loan [Line Items]
Gross loans, by loan to value ratio as of the loan origination date	34,777	[1]	36,999	[2]
Residential-Amortizing [Member] | Less Than Or Equal To 60% [Member]
Loan To Value Ratio Of Residential Loan [Line Items]
Gross loans, by loan to value ratio as of the loan origination date	7,384	[1],[2]	6,762	[2]
Residential-Amortizing [Member] | 60.1% - 70% [Member]
Loan To Value Ratio Of Residential Loan [Line Items]
Gross loans, by loan to value ratio as of the loan origination date	2,620	[1]	1,922	[2]
Residential-Amortizing [Member] | 70.1% - 80% [Member]
Loan To Value Ratio Of Residential Loan [Line Items]
Gross loans, by loan to value ratio as of the loan origination date	3,215	[1]	4,044	[2]
Residential-Amortizing [Member] | 80.1% - 90% [Member]
Loan To Value Ratio Of Residential Loan [Line Items]
Gross loans, by loan to value ratio as of the loan origination date	4,684	[1]	5,300	[2]
Residential-Amortizing [Member] | More Than 90.1% [Member]
Loan To Value Ratio Of Residential Loan [Line Items]
Gross loans, by loan to value ratio as of the loan origination date	16,874	[1]	18,971	[2]

[1] Current loan-to-value ratios (“LTV”) for the majority of the portfolio were obtained during the first quarter of 2013 based on broker price opinions.

[2] Current loan-to-value ratios (“LTV”) for the majority of the portfolio were obtained during the fourth quarter of 2012 based on broker price opinions.