General and administrative expenses (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
General and Administrative Expenses
Professional services	$ 895		$ 2,210		$ 906
Operating and other costs	1,955		2,489		1,955
Transaction costs - Investment Management Business Sale	3,870	[1]
Transaction costs - March 2011 Restructuring					1,700
Subtotal	6,720		4,699		4,561
Non-cash personnel costs
Management incentive awards plan	2,232	[2]	3,054	[2]
Employee stock-based compensation	1,353		505		138
Subtotal	3,585		3,559		138
Expenses of consolidated securization vehicles	64		724		1,336
Total	$ 10,369		$ 8,982		$ 6,035

[1] See Note 1 for discussion of the Investment Management Business Sale and the March 2011 Restructuring.

[2] Represents the accrual of amounts payable under the CT Legacy REIT management incentive awards during the period. See Note 3 for discussion of the CT Legacy REIT management incentive awards plan.