Fair Value Measurements (Details 1) (USD $) In Thousands					3 Months Ended	6 Months Ended		3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended			3 Months Ended		6 Months Ended		3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended			3 Months Ended
Fair Value Measurements (Details 1) (USD $) In Thousands	Jun. 30, 2011 Carrying (Reported) Amount, Fair Value Disclosure [Member]	Dec. 31, 2010 Carrying (Reported) Amount, Fair Value Disclosure [Member]	Jun. 30, 2011 Estimate Of Fair Value Fair Value Disclosure [Member]	Dec. 31, 2010 Estimate Of Fair Value Fair Value Disclosure [Member]	Jun. 30, 2011 Fair Value Measurements Nonrecurring Member Unobservable Inputs (Level 3) [Member]	Jun. 30, 2011 Fair Value Measurements Nonrecurring Member Unobservable Inputs (Level 3) [Member]	Jun. 30, 2010 Fair Value Measurements Nonrecurring Member Unobservable Inputs (Level 3) [Member]	Jun. 30, 2011 Fair Value Measurements Nonrecurring Member Unobservable Inputs (Level 3) [Member] Real Estate [Member] Segment Continuing Operations [Member]	Jun. 30, 2011 Fair Value Measurements Nonrecurring Member Unobservable Inputs (Level 3) [Member] Real Estate [Member] Segment Continuing Operations [Member]	Jun. 30, 2010 Fair Value Measurements Nonrecurring Member Unobservable Inputs (Level 3) [Member] Real Estate [Member] Segment Discontinued Operations [Member]	Jun. 30, 2010 Fair Value Measurements Nonrecurring Member Unobservable Inputs (Level 3) [Member] Real Estate [Member] Segment Discontinued Operations [Member]	Jun. 30, 2011 Fair Value Measurements Nonrecurring Member Unobservable Inputs (Level 3) [Member] Real Estate Investment [Member] Segment Continuing Operations [Member]	Jun. 30, 2011 Fair Value Measurements Nonrecurring Member Unobservable Inputs (Level 3) [Member] Segment Continuing Operations [Member]	Jun. 30, 2010 Fair Value Measurements Nonrecurring Member Unobservable Inputs (Level 3) [Member] Segment Discontinued Operations [Member]	Jun. 30, 2011 Unobservable Inputs (Level 3) [Member]	Jun. 30, 2011 Unobservable Inputs (Level 3) [Member]	Jun. 30, 2010 Unobservable Inputs (Level 3) [Member]	Jun. 30, 2011 Unobservable Inputs (Level 3) [Member] Real Estate [Member] Segment Continuing Operations [Member]	Jun. 30, 2011 Unobservable Inputs (Level 3) [Member] Real Estate [Member] Segment Continuing Operations [Member]	Jun. 30, 2010 Unobservable Inputs (Level 3) [Member] Real Estate [Member] Segment Discontinued Operations [Member]	Jun. 30, 2010 Unobservable Inputs (Level 3) [Member] Real Estate [Member] Segment Discontinued Operations [Member]	Jun. 30, 2011 Unobservable Inputs (Level 3) [Member] Real Estate Investment [Member] Segment Continuing Operations [Member]	Jun. 30, 2011 Unobservable Inputs (Level 3) [Member] Segment Continuing Operations [Member]	Jun. 30, 2010 Unobservable Inputs (Level 3) [Member] Segment Discontinued Operations [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Deferred acquisition fees receivable	$ 25,179	$ 31,419	$ 24,340	$ 32,485
Non-recourse debt	342,941	255,232	352,956	255,460
Line Of Credit	233,160	141,750	230,400	140,600
Fair Value Assets And Liabilities Measured On Non-Recurring Basis [Line Items]
Impairment Charges From Continuing Operations					$ 350	$ 1,904	$ 6,401	$ 350	$ 350	$ 5,390	$ 6,401	$ 1,554	$ 1,904	$ 5,390	$ 41	$ 247	$ 8,137	$ 41	$ 41	$ 985	$ 8,137	$ 206	$ 247	$ 985

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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