Loans and Allowance for Losses (Details8) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012 N	Jun. 30, 2011 N	Jun. 30, 2012 N	Jun. 30, 2011 N
Wholly-Owned First
Troubled debt restructurings, Subsequent defaulted	1	2	1	5
Recorded Investment, Subsequent defaulted	$ 2,078	$ 3,963	$ 2,078	$ 8,617
Wholly-Owned Junior
Troubled debt restructurings, Subsequent defaulted	1	0	1	2
Recorded Investment, Subsequent defaulted	426	0	426	1,121
Participation First
Troubled debt restructurings, Subsequent defaulted	0	0	1	0
Recorded Investment, Subsequent defaulted	0	0	236	0
Participation Junior
Troubled debt restructurings, Subsequent defaulted	0	0	0	0
Recorded Investment, Subsequent defaulted	0	0	0	0
Financing Receivable [Member]
Troubled debt restructurings, Subsequent defaulted	2	2	3	7
Recorded Investment, Subsequent defaulted	$ 2,504	$ 3,963	$ 2,740	$ 9,738