Dispositions, Assets Held for Sale and Discontinued Operations (Details 1) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Revenues:
Rental income, discontinued	$ 0	$ 583,000
Expenses:
Interest expense, discontinued	0	123,000
Property operating expenses, discontinued	0	0
Provision for depreciation, discontinued	0	0
Expenses, discontinued	0	123,000
Income (loss) from discontinued operations, net		$ 460,000