Agreements and Transactions of Related Parties (Details 3) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Due from affiliates
Deferred acquistion fees receivable	$ 21,530	$ 28,655
Reimbursable costs	5,640	1,457
Organization and offering costs	5,066	4,920
Accounts receivable	2,371	181
Asset management fee receivable	18	789
Due from affiliates	34,625	36,002
Due to affiliates
Due to the Estate	40,000
Due to other affiliates	673	673
Due to affiliates	$ 40,673	$ 673