SCHEDULE III-Consolidated Real Estate and Accumulated Depreciation Rollforward (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Real estate assets
Balance, beginning of period		$ 2,614,138	$ 2,301,006	$ 2,246,028
Property acquisitions		0	270,602	0
Improvements		62,790	44,755	59,199
Cost of Real Estate Sold		0	0	0
Other	[1]	(46,737)	(2,225)	(4,221)
Balance, end of period		2,630,191	2,614,138	2,301,006
Accumulated depreciation
Balance, beginning of period		537,431	469,460	411,166
Additions-depreciation		99,644	70,196	62,515
Cost of Real Estate Sold		0	0	0
Other	[1]	(46,737)	(2,225)	(4,221)
Balance, end of period		$ 590,338	$ 537,431	$ 469,460

[1] Other deductions for the years ended December 31, 2018, 2017 and 2016 represent the write-off of fully depreciated assets.