Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenues:
Lease income	$ 295,756	$ 283,303	$ 882,265	$ 826,390
Other property income	2,466	4,401	8,290	9,428
Management, transaction, and other fees	5,767	19,671	18,950	33,419
Total revenues	303,989	307,375	909,505	869,237
Operating expenses:
Depreciation and amortization	80,270	75,459	237,462	226,935
Operating and maintenance	49,577	43,468	143,788	135,616
General and administrative	20,273	17,789	56,710	58,263
Real estate taxes	37,926	35,779	111,495	107,392
Other operating expenses	949	812	3,739	2,687
Total operating expenses	188,995	173,307	553,194	530,893
Other expense (income):
Interest expense, net	36,361	35,993	109,798	108,741
Provision for impairment of real estate, net of tax		(20)		115
Gain on sale of real estate, net of tax	(220)	(6,719)	(106,459)	(38,198)
Net investment loss (income)	1,215	209	9,177	(3,275)
Total other expense (income)	37,356	29,463	12,516	67,383
Income from operations before equity in income of investments in real estate partnerships	77,638	104,605	343,795	270,961
Equity in income of investments in real estate partnerships	11,209	14,243	47,855	26,344
Net income	88,847	118,848	391,650	297,305
Noncontrolling interests:
Exchangeable operating partnership units	(379)	(519)	(1,694)	(1,315)
Limited partners' interests in consolidated partnerships	(890)	(923)	(2,354)	(2,438)
Income attributable to noncontrolling interests	(1,269)	(1,442)	(4,048)	(3,753)
Net income attributable to common stockholders	$ 87,578	$ 117,406	$ 387,602	$ 293,552
Income per common share - basic	$ 0.51	$ 0.69	$ 2.26	$ 1.73
Income per common share - diluted	$ 0.51	$ 0.69	$ 2.26	$ 1.72
Partnership Interest [Member]
Revenues:
Lease income	$ 295,756	$ 283,303	$ 882,265	$ 826,390
Other property income	2,466	4,401	8,290	9,428
Management, transaction, and other fees	5,767	19,671	18,950	33,419
Total revenues	303,989	307,375	909,505	869,237
Operating expenses:
Depreciation and amortization	80,270	75,459	237,462	226,935
Operating and maintenance	49,577	43,468	143,788	135,616
General and administrative	20,273	17,789	56,710	58,263
Real estate taxes	37,926	35,779	111,495	107,392
Other operating expenses	949	812	3,739	2,687
Total operating expenses	188,995	173,307	553,194	530,893
Other expense (income):
Interest expense, net	36,361	35,993	109,798	108,741
Provision for impairment of real estate, net of tax		(20)		115
Gain on sale of real estate, net of tax	(220)	(6,719)	(106,459)	(38,198)
Net investment loss (income)	1,215	209	9,177	(3,275)
Total other expense (income)	37,356	29,463	12,516	67,383
Income from operations before equity in income of investments in real estate partnerships	77,638	104,605	343,795	270,961
Equity in income of investments in real estate partnerships	11,209	14,243	47,855	26,344
Net income	88,847	118,848	391,650	297,305
Noncontrolling interests:
Limited partners' interests in consolidated partnerships	(890)	(923)	(2,354)	(2,438)
Income attributable to noncontrolling interests	(890)	(923)	(2,354)	(2,438)
Net income attributable to common unit holders	$ 87,957	$ 117,925	$ 389,296	$ 294,867
Income per common share - basic	$ 0.51	$ 0.69	$ 2.26	$ 1.73
Income per common share - diluted	$ 0.51	$ 0.69	$ 2.26	$ 1.72