Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
OPERATING ACTIVITIES
Net income	$ 9,375	$ 46,908
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	86,588	79,703
Other amortization	1,547	1,344
Share-based compensation	5,011	5,415
Amortization of straight-line rent receivable (lessor)	(1,063)	(2,797)
Amortization of straight-line rent on operating leases (lessee)	776	766
Gain on sales of real estate assets	(4,865)	(29,590)
Impairment of real estate assets	5,610
Loss from unconsolidated joint ventures	3	2
Distributions from unconsolidated joint ventures	277	99
Provision for bad debts, net		104
Changes in operating assets and liabilities:
Other assets, including right-of-use-assets	(2,015)	(778)
Accounts payable and accrued liabilities	(8,621)	(4,227)
Other liabilities	(1,943)	279
Net cash provided by operating activities	90,680	97,228
INVESTING ACTIVITIES
Acquisitions of real estate	(193,295)	(62,977)
Development of real estate	(13,006)	(16,377)
Additional long-lived assets	(30,892)	(37,592)
Proceeds from sales of real estate assets	12,118	55,001
Proceeds from notes receivable repayments		8
Net cash used in investing activities	(225,075)	(61,937)
FINANCING ACTIVITIES
Net borrowings on unsecured credit facility	58,000	46,000
Borrowings on term loan	50,000
Repayments on notes and bonds payable	(11,483)	(2,556)
Dividends paid	(76,386)	(75,125)
Net proceeds from issuance of common stock	120,668	347
Common stock redemptions	(2,442)	(2,633)
Debt issuance and assumption costs	(4,584)	(125)
Payments made on finance leases	(142)
Net cash provided by (used in) financing activities	133,631	(34,092)
(Decrease) increase in cash and cash equivalents	(764)	1,199
Cash and cash equivalents at beginning of period	8,381	6,215
Cash and cash equivalents at end of period	7,617	7,414
Supplemental Cash Flow Information:
Interest paid	26,512	18,706
Invoices accrued for construction, tenant improvements and other capitalized costs	10,853	9,877
Mortgage notes payable assumed upon acquisition (adjusted to fair value)	0	7,995
Capitalized interest	$ 651	$ 471