CT Legacy REIT (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended									1 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011	Sep. 30, 2012 Five Mile	Sep. 30, 2012 Former lenders under credit facility	Sep. 30, 2012 CT Legacy REIT	Dec. 31, 2011 CT Legacy REIT	Dec. 31, 2011 CT Legacy REIT CMBS Securities	Dec. 31, 2011 CT Legacy REIT CDOs & Other Securities	Feb. 10, 2012 CT Legacy Asset	Dec. 31, 2011 CT Legacy Asset
Beneficial ownership of CT Legacy REIT	52.00%		52.00%			24.00%	24.00%
Percentage of Class B dividends payable to holders	25.00%		25.00%
Aggregate cash distributions to all other classes of stock	$ 50,000		$ 50,000
Investment in CT Legacy Asset, at fair value								100,100					89,700
Investment in CT Legacy Asset, net								53,100
Payable under secured notes								11,100
Payable under management incentive award plans								7,800
Maximum exposure to loss								34,200
Notional Amount													60,800
Fair Value									(8,817)				8,800
Non-cash interest expense, interest rate swaps												291
Reclassification due to termination of effective hedge designation		1,246	2,481	4,447								1,800
Interest rate swaps, net payments ineffective hedge												262
Number of interest rate swaps													5
Number of securities										2	4
[HeldToMaturitySecuritiesFairValue]										$ 1,400	$ 158
Number of securities with recognized other-than-temporary-impairments								11