Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Real estate assets:
Operating properties, net of accumulated depreciation of $874,988 and $803,073 in 2021 and 2020, respectively	$ 6,506,910	$ 6,232,546
Projects under development	174,803	57,389
Land	157,681	162,406
Total properties	6,839,394	6,452,341
Real estate assets and other assets held for sale, net	0	125,746
Cash and cash equivalents	8,937	4,290
Restricted cash	1,231	1,848
Accounts receivable	12,553	20,248
Deferred rents receivable	154,866	138,341
Investment in unconsolidated joint ventures	77,811	125,481
Intangible assets, net	168,553	189,164
Other assets	48,689	49,939
Total assets	7,312,034	7,107,398
Liabilities:
Notes payable	2,237,509	2,162,719
Accounts payable and accrued expenses	224,523	186,267
Deferred income	74,515	62,319
Intangible liabilities, net	63,223	69,846
Other liabilities	111,864	118,103
Liabilities of real estate assets held for sale, net	0	12,606
Total liabilities	2,711,634	2,611,860
Commitments and contingencies
Stockholders' investment:
Common stock, $1 par value per share, 300,000,000 shares authorized, 151,272,969 and 151,149,289 shares issued and outstanding in 2021 and 2020, respectively	151,273	151,149
Additional paid-in capital	5,549,308	5,542,762
Treasury stock at cost, 2,584,933 shares in 2021 and 2020	(148,473)	(148,473)
Distributions in excess of cumulative net income	(985,338)	(1,078,304)
Total stockholders' investment	4,566,770	4,467,134
Nonredeemable noncontrolling interests	33,630	28,404
Total equity	4,600,400	4,495,538
Total liabilities and equity	$ 7,312,034	$ 7,107,398