Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Discontinued Operations [Abstract]
Rental and other revenues	$ 0	$ 8,484
Operating expenses:
Rental property and other expenses	0	3,334
General and administrative	0	1,388
Total operating expenses	0	4,722
Interest expense	0	85
Other income	0	420
Income from discontinued operations	0	4,097
Net gains on disposition of discontinued operations	0	414,496
Total income from discontinued operations	0	418,593
Net Cash Provided by/(Used in) Discontinued Operations [Abstract]
Cash flows from operating activities	0	2,040
Cash flows from investing activities	$ 0	$ 417,097