Discontinued Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Discontinued Operations and Disposal Groups [Abstract]
Rental income			$ 7,206
Tenant reimbursements			278
Other property income			13
Total revenues			7,497
Property expenses			2,171
Real estate taxes			692
Depreciation and amortization			2,061
Total expenses			4,924
Income from discontinued operations before net gain on dispositions of discontinued operations	$ 0	$ 0	2,573
Net gain on dispositions of discontinued operations	0	0	121,922
Total income from discontinued operations	$ 0	$ 0	$ 124,495