CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Statement of Cash Flows [Abstract]
Net cash provided by operating activities:	$ 152,466	$ 142,919
Cash flows from investing activities:
Acquisition of real estate, including intangible assets	(429,834)	(439,885)
Investment in real estate under construction	(21,561)	0
Capital expenditures	(15,328)	(12,130)
Net proceeds from sale of properties	99,740	334,395
Investments in non-consolidated entities	(6,152)	(1,776)
Distributions from non-consolidated entities in excess of accumulated earnings	6,843	14,830
Deferred leasing costs	(4,791)	(5,231)
Change in real estate deposits, net	461	(4,936)
Net cash used in investing activities	(370,622)	(114,733)
Cash flows from financing activities:
Dividends to common and preferred shareholders	(87,966)	(96,117)
Principal amortization payments	(16,132)	(20,050)
Principal payments on debt, excluding normal amortization	0	(67,229)
Revolving credit facility borrowings	170,000	110,000
Revolving credit facility payments	(170,000)	(110,000)
Proceeds from senior notes	396,932	0
Repurchase of senior notes	(112,312)	0
Deferred financing costs	(3,803)	(5,456)
Payment of early extinguishment of debt charges	(9,477)	(3,500)
Cash contributions from noncontrolling interests	1,285	0
Cash distributions to noncontrolling interests	(1,521)	(2,196)
Repurchases to settle tax obligations	(2,623)	(5,368)
Issuance of common shares, net	225,122	131,831
Repurchase of common shares	(11,042)	(3,598)
Net cash provided by (used in) financing activities	378,463	(71,683)
Change in cash, cash equivalents and restricted cash	160,307	(43,497)
Cash, cash equivalents and restricted cash, at beginning of period	129,310	177,247
Cash, cash equivalents and restricted cash, at end of period	289,617	133,750
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents at beginning of period	122,666	168,750
Restricted cash at beginning of period	6,644	8,497
Cash and cash equivalents at end of period	287,920	126,058
Restricted cash at end of period	$ 1,697	$ 7,692