Reportable Segments Reportable Segments (Revenue Reconciliation) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Segment Reporting Information [Line Items]
Document Fiscal Year Focus			2014
Direct Costs of Leased and Rented Property or Equipment	$ (35,959)	$ (17,868)	$ (70,816)	$ (33,079)
Total consolidated revenues	84,505	42,521	166,228	80,784
Total Segment [Member]
Segment Reporting Information [Line Items]
Net operating property income, including discontinued operations	51,288	28,572	101,306	54,742
Residential Lot Sales Net of Cost of Sales Including Gain on Sale of Undepreciated Investment Properties	1,373	268	1,533	679
Fee income, Net of Reimbursed Expenses	2,025	2,933	4,363	6,587
Other Income	2,256	2,064	4,172	2,346
Direct Costs of Leased and Rented Property or Equipment	35,959	17,868	70,816	(33,079)
Plus residential lot, multi-family unit and outparcel cost of sales	270	433	270	(1,578)
Net operating income in joint venture	(6,648)	(7,582)	(13,147)	(14,029)
Net sales of joint ventures	(47)	8	(47)	(2)
Net operating income from discontinued operations not included in revenues	(565)	(1,758)	(1,457)	(3,567)
Fee income in discontinued operation	0	(3)	0	(77)
Discontinued Operations Other Income	82	8	89	15
Residential Lot Multi Family Unit Tract and Outparcel Sales Net of Cost of Sales Including Gain on Sale of Undepreciated Investment Properties	(1,324)	(274)	(1,492)	(537)
Total consolidated revenues	$ 84,505	$ 42,521	$ 166,228	$ 80,784