Property Dispositions and Discontinued Operations (Narratives) (Details) $ in Thousands		3 Months Ended		12 Months Ended
	Apr. 24, 2014 USD ($)	Mar. 31, 2015 USD ($)	Jun. 30, 2014 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($) property
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on sale of real estate, net of tax				$ 2,197	$ 13,338	$ 659
Income from discontinued operations, net of tax				0	0	7,487
Payments of mortgage principal				$ 121,267	$ 51,309	44,830
Hotel | Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on sale of real estate, net of tax						$ 8,000
Number of properties sold | property						1
Sales of real estate						$ 20,000
Revenues						3,800
Expenses						3,300
Loss on extinguishment of debt						1,000
Income from discontinued operations, net of tax						7,500
Payments of mortgage principal						$ 5,100
Ishops
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on sale of real estate, net of tax	$ 14,600	$ 2,200	$ 12,400
Percentage of gain on sale recognized				15.00%	85.00%
Deferred gain on the sale of property	$ 2,200