Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
OPERATING ACTIVITIES
Net income	$ 11,975	$ 53,456
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	131,725	121,764
Other amortization	2,279	2,113
Share-based compensation	10,141	8,090
Amortization of straight-line rent receivable (lessor)	(1,833)	(3,599)
Amortization of straight-line rent on operating leases (lessee)	1,159	1,147
Gain on sales of real estate assets	(5,065)	(30,879)
Impairment of real estate assets	5,610
Loss (income) from unconsolidated joint ventures	16	(15)
Distributions from unconsolidated joint ventures	277	182
Provision for bad debts, net		42
Changes in operating assets and liabilities:
Other assets, including right-of-use-assets	(6,740)	(6,891)
Accounts payable and accrued liabilities	3,220	5,908
Other liabilities	5,709	(638)
Net cash provided by operating activities	158,473	150,680
INVESTING ACTIVITIES
Acquisitions of real estate	(271,575)	(67,445)
Development of real estate	(19,152)	(21,059)
Additional long-lived assets	(45,902)	(59,802)
Proceeds from sales of real estate assets	14,151	64,271
Proceeds from notes receivable repayments		8
Net cash used in investing activities	(322,478)	(84,027)
FINANCING ACTIVITIES
Net borrowings on unsecured credit facility	60,000	56,000
Borrowings on term loan	50,000
Repayments on notes and bonds payable	(12,663)	(3,808)
Dividends paid	(115,237)	(112,694)
Net proceeds from issuance of common stock	192,514	459
Common stock redemptions	(2,343)	(2,673)
Debt issuance and assumption costs	(4,589)	(125)
Payments made on finance leases	(249)
Net cash provided by (used in) financing activities	167,433	(62,841)
Increase in cash and cash equivalents	3,428	3,812
Cash and cash equivalents at beginning of period	8,381	6,215
Cash and cash equivalents at end of period	11,809	10,027
Supplemental Cash Flow Information:
Interest paid	37,946	30,463
Invoices accrued for construction, tenant improvements and other capitalized costs	10,702	5,680
Mortgage notes payable assumed upon acquisition (adjusted to fair value)		7,995
Capitalized interest	$ 999	$ 684