Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 238,114	$ 152,683	$ 80,765
Adjustments to reconcile net income to net cash provided by operating activities:
Gain on sales of investments in unconsolidated joint ventures	(45,767)	0	0
Gain on investment property transactions	(90,125)	(110,761)	(5,437)
Impairment	14,829	0	0
Depreciation and amortization	288,648	257,149	181,382
Amortization of deferred financing costs and premium on notes payable	(888)	1,500	2,417
Equity-classified stock-based compensation expense, net of forfeitures	5,298	3,830	3,399
Effect of non-cash adjustments to rental revenues	(52,593)	(44,839)	(32,401)
Income from unconsolidated joint ventures	(7,947)	(12,666)	(12,224)
Operating distributions from unconsolidated joint ventures	9,303	11,792	16,756
Gain on extinguishment of debt	0	0	(8)
Changes in other operating assets and liabilities:
Change in other receivables and other assets, net	(2,439)	(10,079)	(6,049)
Change in operating liabilities, net	(5,345)	54,568	434
Net cash provided by operating activities	351,088	303,177	229,034
Proceeds from investment property sales, net
Proceeds from investment property sales, net	435,833	62,667	372
Proceeds from sale of interest in unconsolidated joint ventures, net	53,601	0	0
Property acquisition, development, and tenant asset expenditures	(619,602)	(482,633)	(223,636)
Cash and restricted cash acquired in merger	0	85,989	0
Contributions to unconsolidated joint ventures	(4,285)	(23,361)	(50,933)
Distributions from unconsolidated joint ventures	2,151	10	2,032
Change in notes receivable and other assets	(161)	(96)	(8,317)
Other	0	0	(4,002)
Net cash used in investing activities	(132,463)	(357,424)	(284,484)
Proceeds from credit facility
Proceeds from credit facility	575,500	1,212,000	8,000
Repayment of credit facility	(594,600)	(960,500)	(8,000)
Repayment of notes payable	(38,700)	(691,179)	(31,402)
Issuance of unsecured senior notes	0	650,000	0
Payment of deferred financing costs	(73)	(2,868)	(6,166)
Contributions from noncontrolling interests	5,197	8,087	1,497
Distributions to nonredeemable noncontrolling interests	(1,156)	(2,411)	(2,653)
Common dividends paid	(176,263)	(142,941)	(107,167)
Other	0	(1,028)	(1,709)
Net cash provided by (used in) financing activities	(230,095)	69,160	(147,600)
NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH	(11,470)	14,913	(203,050)
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT BEGINNING OF PERIOD	17,608	2,695	205,745
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT END OF PERIOD	$ 6,138	$ 17,608	$ 2,695