Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net income	$ 116,162	$ 102,160
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	55,275	54,659
Amortization of deferred financing costs	2,830	3,034
Non-cash interest expense related to amortization of discount on equity component of exchangeable senior notes	1,209	1,162
Non-cash lease expense	353	0
Compensation expense related to stock-based awards	2,980	2,954
Distributions from unconsolidated real estate ventures in excess of earnings	2,539	1,732
Changes in operating assets and liabilities:
Other assets	2,490	(305)
Accounts payable and accrued expenses	3,727	6,418
Other liabilities	1,691	(2,475)
Net cash provided by operating activities	189,256	169,339
Cash flows from investing activities:
Acquisition of real estate assets	(30,164)	(212,552)
Development and redevelopment of real estate assets	(15,373)	(15,846)
Investment in unconsolidated real estate entities	(6,441)	(17,395)
Issuance of notes receivable	(7,500)	0
Purchase of equipment and fixtures	(1,095)	(1,182)
Net cash used in investing activities	(60,573)	(246,975)
Cash flows from financing activities:
Proceeds from notes payable and revolving lines of credit	268,000	424,000
Principal payments on notes payable and revolving lines of credit	(192,508)	(225,020)
Principal payments on notes payable to trusts	0	(30,928)
Deferred financing costs	(16)	(100)
Net proceeds from exercise of stock options	944	1,757
Repurchase of common stock	(52,204)	0
Dividends paid on common stock	(117,197)	(109,523)
Distributions to noncontrolling interests	(8,505)	(8,412)
Net cash provided by (used in) financing activities	(101,486)	51,774
Net increase (decrease) in cash, cash equivalents, and restricted cash	27,197	(25,862)
Cash, cash equivalents, and restricted cash, beginning of the period	70,733	72,690
Cash, cash equivalents, and restricted cash, end of the period	97,930	46,828
Supplemental schedule of cash flow information
Interest paid	41,013	45,165
Income taxes paid	976	(177)
Redemption of Operating Partnership units held by noncontrolling interests for common stock
Noncontrolling interests in Operating Partnership	(330)	(3,310)
Common stock and paid-in capital	330	3,310
Establishment of operating lease right of use assets and lease liabilities
Real estate assets - operating lease right-of-use assets	0	95,506
Operating lease liabilities	0	(104,863)
Accounts payable and accrued expenses	0	9,357
Acquisitions of real estate assets
Real estate assets, net	0	19,937
Notes payable assumed	0	(17,157)
Investment in unconsolidated real estate ventures	0	(2,780)
Accrued construction costs and capital expenditures
Acquisition of real estate assets	960	780
Accounts payable and accrued expenses	(960)	(780)
Contribution of Preferred OP Units to unconsolidated real estate venture
Contribution of Preferred OP Units to unconsolidated real estate venture
Investments in unconsolidated real estate ventures	0	23,447
Value of Preferred Operating Partnership units issued	$ 0	$ (23,447)