Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenues:
Total Revenues	$ 802,874	$ 762,290	$ 755,073
Expenses:
Rental property operating expenses	266,434	258,371	259,461
Reimbursed expenses	608	2,024	2,476
General and administrative expenses	32,331	28,319	29,321
Interest expense	105,463	72,537	67,027
Depreciation and amortization	314,897	295,587	288,092
Other	2,128	2,134	2,131
Total costs and expenses	721,861	658,972	648,508
Income from unconsolidated joint ventures	2,299	7,700	6,801
Gain on sales of investment in unconsolidated joint ventures	0	56,267	13,083
Gain (loss) on investment property transactions	504	(9)	152,547
Gain on extinguishment of debt	0	169	0
Net income	83,816	167,445	278,996
Net income attributable to noncontrolling interests	(853)	(652)	(410)
Net income available to common stockholders	$ 82,963	$ 166,793	$ 278,586
Net income per common share — basic (in usd per share)	$ 0.55	$ 1.11	$ 1.87
Net income per common share — diluted (in usd per share)	$ 0.55	$ 1.11	$ 1.87
Weighted average shares — basic (in shares)	151,714	150,113	148,666
Weighted average shares — diluted (in shares)	152,040	150,419	148,891
Dividends declared per common share (in usd per share)	$ 1.28	$ 1.28	$ 1.24
Rental property revenues
Revenues:
Total Revenues	$ 799,047	$ 753,511	$ 739,063
Fee income
Revenues:
Total Revenues	1,373	6,119	15,559
Other
Revenues:
Total Revenues	$ 2,454	$ 2,660	$ 451