Loans Receivable (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Activity related to loans receivable
Mortgage Loans on Real Estate, Commercial and Consumer, Net			$ 114,333
Purchase and advances			44,096	44,161
Interest (received) accrued, net			135
Repayments			(29,798)	(12,717)
Loan discount accretion	2,726	2,289	5,559	8,793
Discount accretion received in cash			(14,065)	(8,540)
Transfer 180 North Michigan loan to equity investments			(2,938)
Mortgage Loans on Real Estate, Commercial and Consumer, Net	$ 123,872		$ 123,872