Transactions with Related Parties (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended		12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Summary of related parties transactions
General and administrative reimbursement paid	$ 5,481	$ 4,138
General and administrative reimbursement unpaid	3,018		2,734
Loan servicing paid	147	293
Loan servicing unpaid	0		0
Investment advisor fee paid	867	781
Investment advisor fee unpaid	143		135
Total general and administrative to related parties paid	6,495	5,212
Total general and administrative to related parties unpaid	3,161		2,869
Property management fees paid	14,514	15,779
Property management fees unpaid	24		(178)
Business manager management fee paid	19,993	20,000
Business manager management fee unpaid	9,993		10,000
Loan placement fees paid	938	636
Loan placement fees unpaid	$ 0		$ 0