Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
OPERATING ACTIVITIES
Net income	$ 79,828	$ 9,375
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	95,188	86,588
Other amortization	2,510	1,547
Share-based compensation	5,004	5,011
Amortization of straight-line rent receivable (lessor)	(1,807)	(1,063)
Amortization of straight-line rent on operating leases (lessee)	749	776
Gain on sales of real estate assets	(68,218)	(4,865)
Impairment of real estate assets		5,610
Loss from unconsolidated joint ventures	127	3
Distributions from unconsolidated joint ventures	184	277
Changes in operating assets and liabilities:
Other assets, including right-of-use-assets	(1,272)	(2,015)
Accounts payable and accrued liabilities	(5,902)	(8,621)
Other liabilities	(1,152)	(1,943)
Net cash provided by operating activities	105,239	90,680
INVESTING ACTIVITIES
Acquisitions of real estate	(87,417)	(193,295)
Development of real estate	(2,678)	(13,006)
Additional long-lived assets	(44,316)	(30,892)
Proceeds from sales of real estate assets		12,118
Net cash used in investing activities	(134,411)	(225,075)
FINANCING ACTIVITIES
Net (repayments) borrowings on unsecured credit facility	(293,000)	58,000
Borrowings on term loan	150,000	50,000
Borrowings of notes and bonds payable	298,995
Repayments on notes and bonds payable	(31,698)	(11,483)
Dividends paid	(80,926)	(76,386)
Net proceeds from issuance of common stock	40,169	120,668
Common stock redemptions	(892)	(2,442)
Settlement of treasury rate locks	(4,267)
Debt issuance and assumption costs	(3,018)	(4,584)
Payments made on finance leases	(3,168)	(142)
Net cash provided by financing activities	72,195	133,631
Increase (decrease) in cash and cash equivalents	43,023	(764)
Cash and cash equivalents at beginning of period	657	8,381
Cash and cash equivalents at end of period	43,680	7,617
Supplemental Cash Flow Information
Interest paid	26,101	26,512
Invoices accrued for construction, tenant improvements and other capitalized costs	10,013	10,853
Mortgage notes payable assumed upon acquisition (adjusted to fair value)	19,269
Capitalized interest	$ 706	$ 651