Investments in Real Estate Partnerships - Investment Reconciliation (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended		9 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2013 BRE Throne Holdings LLC (BRET) [Member]	Dec. 31, 2013 BRE Throne Holdings LLC (BRET) [Member]	Dec. 31, 2012 BRE Throne Holdings LLC (BRET) [Member]	Jul. 25, 2012 BRE Throne Holdings LLC (BRET) [Member]
Schedule of Equity Method Investments [Line Items]
Document Fiscal Year Focus	2013
Capital - Regency	$ 468,099	$ 518,505
less: Impairment	5,880	5,880
less: Ownership percentage or Restricted Gain Method deferral	29,261	38,995
less: Net book equity in excess of purchase price	78,203	78,203
Investments in real estate partnerships	$ 358,849	$ 442,927		$ 0	$ 48,757	$ 47,500
Preferred Stock, Dividend Rate, Percentage			10.50%