Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 152,683	$ 80,765	$ 219,959
Adjustments to reconcile net income to net cash provided by operating activities:
Gain on investment property transactions	(110,761)	(5,437)	(133,059)
Depreciation and amortization	257,149	181,382	196,745
Amortization of deferred financing costs and premium on notes payable	1,500	2,417	(2,139)
Stock-based compensation expense, net of forfeitures	3,830	3,399	2,994
Effect of non-cash adjustments to rental revenues	(44,839)	(32,401)	(40,410)
Income from unconsolidated joint ventures	(12,666)	(12,224)	(47,115)
Operating distributions from unconsolidated joint ventures	11,792	16,756	11,065
Gain on extinguishment of debt	0	(8)	(2,258)
Changes in other operating assets and liabilities:
Change in other receivables and other assets, net	(10,079)	(6,049)	11,456
Change in operating liabilities, net	54,568	434	(5,589)
Net cash provided by operating activities	303,177	229,034	211,649
Proceeds from investment property sales
Proceeds from investment property sales	62,667	372	370,944
Proceeds from sale of interest in unconsolidated joint venture	0	0	12,514
Property acquisition, development, and tenant asset expenditures	(482,633)	(223,636)	(319,975)
Cash and restricted cash acquired in merger	85,989	0	0
Purchase of tenant-in-common interest	0	0	(13,382)
Investment in unconsolidated joint ventures	(23,361)	(50,933)	(20,080)
Distributions from unconsolidated joint ventures	10	2,032	75,506
Change in notes receivable and other assets	(96)	(8,317)	6,583
Other	0	(4,002)	0
Net cash provided by (used in) investing activities	(357,424)	(284,484)	112,110
Proceeds from credit facility
Proceeds from credit facility	1,212,000	8,000	589,300
Repayment of credit facility	(960,500)	(8,000)	(723,300)
Repayment of notes payable	(691,179)	(31,402)	(495,913)
Issuance of unsecured senior notes	650,000	0	350,000
Payment of deferred financing costs	(2,868)	(6,166)	(2,074)
Common stock issued, net of expenses	0	0	211,521
Contributions from noncontrolling interests	8,087	1,497	2,646
Distributions to nonredeemable noncontrolling interests	(2,411)	(2,653)	(1,807)
Common dividends paid	(142,941)	(107,167)	(99,151)
Other	(1,028)	(1,709)	(557)
Net cash provided by (used in) financing activities	69,160	(147,600)	(169,335)
NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH	14,913	(203,050)	154,424
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT BEGINNING OF PERIOD	2,695	205,745	51,321
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT END OF PERIOD	$ 17,608	$ 2,695	$ 205,745