CT Legacy Partners (Details 4) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Loan risk ratings
Book Value, net	$ 139,500	$ 141,500
CT Legacy Partners
Loan risk ratings
Principal Balance	135,300
CT Legacy Partners | Loans Receivable
Loan risk ratings
Number of Loans	12
Principal Balance	257,398
Book Value, net	150,332
CT Legacy Partners | Loans Receivable | Risk Rating 1-3
Loan risk ratings
Number of Loans	2
Principal Balance	32,683
Book Value, net	32,874
CT Legacy Partners | Loans Receivable | Risk Rating 4-5
Loan risk ratings
Number of Loans	4
Principal Balance	41,754
Book Value, net	36,910
CT Legacy Partners | Loans Receivable | Risk Rating 6-8
Loan risk ratings
Number of Loans	6
Principal Balance	182,961
Book Value, net	80,548
CT Legacy Partners | Senior Mortgages
Loan risk ratings
Number of Loans	2
Principal Balance	32,869
Book Value, net	26,214
CT Legacy Partners | Senior Mortgages | Risk Rating 4-5
Loan risk ratings
Number of Loans	1
Principal Balance	15,000
Book Value, net	13,705
CT Legacy Partners | Senior Mortgages | Risk Rating 6-8
Loan risk ratings
Number of Loans	1
Principal Balance	17,869
Book Value, net	12,509
CT Legacy Partners | Subordinated interests in mortgages
Loan risk ratings
Number of Loans	5
Principal Balance	123,082
Book Value, net	80,853
CT Legacy Partners | Subordinated interests in mortgages | Risk Rating 1-3
Loan risk ratings
Number of Loans	1
Principal Balance	12,814
Book Value, net	12,814
CT Legacy Partners | Subordinated interests in mortgages | Risk Rating 6-8
Loan risk ratings
Number of Loans	4
Principal Balance	110,268
Book Value, net	68,039
CT Legacy Partners | Mezzanine and Other Loans
Loan risk ratings
Number of Loans	5
Principal Balance	101,447
Book Value, net	43,265
CT Legacy Partners | Mezzanine and Other Loans | Risk Rating 1-3
Loan risk ratings
Number of Loans	1
Principal Balance	19,869
Book Value, net	20,060
CT Legacy Partners | Mezzanine and Other Loans | Risk Rating 4-5
Loan risk ratings
Number of Loans	3
Principal Balance	26,754
Book Value, net	23,205
CT Legacy Partners | Mezzanine and Other Loans | Risk Rating 6-8
Loan risk ratings
Number of Loans	1
Principal Balance	54,824
Book Value, net