Investments in Unconsolidated Entities (Details 3) (USD $)	11 Months Ended	12 Months Ended
	Dec. 31, 2013	Jan. 31, 2013	Jan. 31, 2012
Schedule of Equity Method Investments [Line Items]
Gain on disposition of rental properties	$ 68,311,000	$ 0	$ 0
Company's portion of gain on disposition of rental properties	34,281,000	0	0
Gain (loss) on disposition of equity method investments	7,069,000	16,107,000	12,567,000
Gain on partial disposition of equity method investments	27,080,000	0	0
Gain on disposition or partial disposition of equity method investments	34,149,000	16,107,000	12,567,000
Westin Convention Center [Member]
Schedule of Equity Method Investments [Line Items]
Gain on disposition of rental properties	65,482,000	0	0
Liberty Center [Member]
Schedule of Equity Method Investments [Line Items]
Gain on disposition of rental properties	2,829,000	0	0
Marketplace at Riverpark [Member]
Schedule of Equity Method Investments [Line Items]
Gain (loss) on disposition of equity method investments	8,579,000	0	0
Plaza at Robinson Town Center [Member]
Schedule of Equity Method Investments [Line Items]
Gain (loss) on disposition of equity method investments	(1,510,000)	0	0
Village at Gulfstream Park [Member]
Schedule of Equity Method Investments [Line Items]
Gain (loss) on disposition of equity method investments	0	14,479,000	0
Chagrin Plaza I & II [Member]
Schedule of Equity Method Investments [Line Items]
Gain (loss) on disposition of equity method investments	0	1,628,000	0
Metropolitan Lofts [Member]
Schedule of Equity Method Investments [Line Items]
Gain (loss) on disposition of equity method investments	0	0	9,964,000
Twin Lake Towers [Member]
Schedule of Equity Method Investments [Line Items]
Gain (loss) on disposition of equity method investments	0	0	2,603,000
Charleston Town Center [Member]
Schedule of Equity Method Investments [Line Items]
Gain on partial disposition of equity method investments	$ 27,080,000	$ 0	$ 0