Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Real estate assets:
Operating properties, net of accumulated depreciation of $923,735 and $874,988 in 2022 and 2021, respectively	$ 6,497,936	$ 6,506,910
Projects under development	205,885	174,803
Land	157,680	157,681
Total properties	6,861,501	6,839,394
Cash and cash equivalents	7,000	8,937
Restricted cash	1,231	1,231
Accounts receivable	16,790	12,553
Deferred rents receivable	160,501	154,866
Investment in unconsolidated joint ventures	93,307	77,811
Intangible assets, net	159,853	168,553
Other assets, net	59,912	48,689
Total assets	7,360,095	7,312,034
Liabilities:
Notes payable	2,349,484	2,237,509
Accounts payable and accrued expenses	192,028	224,523
Deferred income	74,951	74,515
Intangible liabilities, net	60,252	63,223
Other liabilities	100,735	111,864
Total liabilities	2,777,450	2,711,634
Commitments and contingencies
Stockholders' investment:
Common stock, $1 par value per share, 300,000,000 shares authorized, 151,348,628 and 151,272,969 shares issued and outstanding in 2022 and 2021, respectively	151,349	151,273
Additional paid-in capital	5,550,718	5,549,308
Treasury stock at cost, 2,584,933 shares in 2022 and 2021	(148,473)	(148,473)
Distributions in excess of cumulative net income	(1,005,951)	(985,338)
Total stockholders' investment	4,547,643	4,566,770
Nonredeemable noncontrolling interests	35,002	33,630
Total equity	4,582,645	4,600,400
Total liabilities and equity	$ 7,360,095	$ 7,312,034