Fair Value Of Financial Instruments (Schedule Of Assets And Liabilities, Measured At Fair Value On A Recurring Basis) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 5,725	$ 4,657
Restricted Cash And Cash Equivalents, Fair Value Disclosure	167,706	104,679
Restricted cash and cash equivalents	167,706	104,679
Restricted securities available for sale	0	810
Net investment in Loans receivable	1,895,056	1,615,009
Derivative instruments	18	16
Revolving secured line of credit	115,800	43,900
Secured financing	801,226	598,622
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	5,725	4,657
Restricted Cash And Cash Equivalents, Fair Value Disclosure	167,706	104,679
Restricted cash and cash equivalents	167,706	104,679
Restricted securities available for sale	0	810
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative instruments	18	16
Revolving secured line of credit	115,800	43,900
Secured financing	801,226	598,622
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net investment in Loans receivable	1,895,056	1,615,009
Mortgages [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes	4,104	4,288
Mortgages [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes	4,104	4,288
Senior Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes	385,875	365,500
Senior Notes [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes	$ 385,875	$ 365,500