Discontinued Operations - Revenues and Expenses in Discontinued Operations (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
Discontinued Operations and Disposal Groups [Abstract]
Income from office and parking properties	$ 1	$ 5,101	$ 206	$ 10,222
Operating expense	51	2,286	183	4,683
Depreciation and amortization	0	1,706	116	3,321
Impairment loss	0	4,600	0	4,600
Management company expense	0	(5)	0	2
Interest expense	0	142	0	284
Total expenses	51	8,729	299	12,890
Loss from discontinued operations	(50)	(3,628)	(93)	(2,668)
Gain on sale of real estate from discontinued operations	0	0	10,463	542
Total discontinued operations	(50)	(3,628)	10,370	(2,126)
Net (income) loss attributable to noncontrolling interest from discontinued operations	3	(26)	(516)	(267)
Total discontinued operations-Company's share	$ (47)	$ (3,654)	$ 9,854	$ (2,393)