Schedule III - Real Estate and Accumulated Depreciation - Reconciliation of Investment Properties (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]
Balance, beginning of year	$ 3,500,917	$ 3,133,966	$ 3,109,433
Acquisition of new properties	110,444	316,428	0
Improvements	79,070	89,426	104,060
Property classified as held for sale	(61,965)	0	0
Disposals	(77,017)	(38,903)	(79,527)
Balance, end of year	3,551,449	$ 3,500,917	$ 3,133,966
Aggregate cost of investment properties for federal income tax purpose	$ 3,700,000