Assets Held for Sale and Discontinued Operations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Discontinued Operations and Disposal Groups [Abstract]
Land	$ 5,109		$ 5,109
Building and improvements, net	15,181		15,181
Lease intangibles, net	848		848
Property held for sale, net	21,138		21,138
Receivables and other assets, net	1,059		1,059
Security deposits, prepaid rent and other liabilities	131		131
Revenues:
Rental income	380	564	814	1,131
Expenses:
Rental	72	63	137	151
Depreciation and amortization	0	229	171	458
Total expenses	72	292	308	609
Income before other income (expense)	308	272	506	522
Other income (expense):
Interest expense related to debt	0	(128)	(161)	(255)
Income from discontinued operations	$ 308	$ 144	$ 345	$ 267