Schedule III - Real Estate And Accumulated Depreciation Property - Real Estate and Accumulated Depreciation Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Real Estate and Accumulated Depreciation [Line Items]
Construction in progress	$ 4,052	$ 12,788
Aggregate cost of real estate owned	2,410,252
Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at beginning of period	2,229,495	2,516,085	$ 2,180,252
Acquisitions and capital improvements	368,489	237,439	598,843
Disposals and write-offs	(397,145)	(524,029)	(263,010)
Balance at end of period	2,200,839	2,229,495	2,516,085
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at beginning of period	286,330	348,337	351,389
Depreciation expense, continuing operations	66,808	73,021	70,959
Depreciation expense, properties classified as discontinued operations	0	0	974
Disposal and write-offs	(106,436)	(135,028)	(74,985)
Balance at end of period	$ 246,702	$ 286,330	$ 348,337
Building and other improvements
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Estimated lives used to compute depreciation	30 years
Furniture, fixtures and equipment | Minimum
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Estimated lives used to compute depreciation	5 years
Furniture, fixtures and equipment | Maximum
Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Estimated lives used to compute depreciation	15 years