Reportable Segments - Reconciliation of Net Income to Net Operating Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information [Line Items]
Net Operating Income	$ 119,607	$ 123,124
Net operating income from unconsolidated joint ventures	(2,719)	(4,754)
Total Revenues	186,898	189,550
Reimbursed expenses	(360)	(368)
General and administrative expenses	(8,063)	(6,733)
Interest expense	(15,525)	(17,208)
Depreciation and amortization	(70,744)	(70,870)
Other expenses	(221)	(590)
Income from unconsolidated joint ventures	1,124	1,903
Gain on sales of investments in unconsolidated joint ventures	0	39
Loss on investment property transactions	(69)	(17)
Net income	28,163	29,311
Fee income
Segment Reporting Information [Line Items]
Total Revenues	1,388	4,529
Termination fee income
Segment Reporting Information [Line Items]
Total Revenues	1,462	42
Other
Segment Reporting Information [Line Items]
Total Revenues	$ 2,283	$ 214