CT Legacy REIT (Details 7) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Book Value, net		$ 19,282
CT Legacy REIT
Book Value, net		206,514
Percentage of Book Value		100.00%
CT Legacy REIT | Northeast
Book Value, net		64,040
Percentage of Book Value		31.00%
CT Legacy REIT | Southwest
Book Value, net		40,353
Percentage of Book Value		19.00%
CT Legacy REIT | West
Book Value, net		38,179
Percentage of Book Value		18.00%
CT Legacy REIT | Southeast
Book Value, net		20,076
Percentage of Book Value		10.00%
CT Legacy REIT | Northwest
Book Value, net		9,364
Percentage of Book Value		5.00%
CT Legacy REIT | International
Book Value, net		34,502
Percentage of Book Value		17.00%
CT Legacy REIT | Office
Book Value, net		84,519
Percentage of Book Value		41.00%
CT Legacy REIT | Hotel
Book Value, net		75,240
Percentage of Book Value		36.00%
CT Legacy REIT | Multifamily
Book Value, net		14,212
Percentage of Book Value		7.00%
CT Legacy REIT | Other Property
Book Value, net		32,543
Percentage of Book Value		16.00%
CT Legacy REIT | Senior Mortgages
Book Value, net		77,986
Percentage of Book Value		37.00%
CT Legacy REIT | Subordinated interests in mortgages
Book Value, net		58,078
Percentage of Book Value		28.00%
CT Legacy REIT | Mezzanine Loans
Book Value, net		47,271
Percentage of Book Value		23.00%
CT Legacy REIT | Other Loans
Book Value, net		$ 23,179
Percentage of Book Value		12.00%