CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Cash Flows [Abstract]
Net cash provided by operating activities	$ 47,621	$ 56,221
Cash flows from investing activities:
Acquisition of real estate, including intangible assets	(57,991)	0
Capital expenditures	(4,455)	(6,727)
Net proceeds from sale of properties	79,283	61,518
Investments in non-consolidated entities	(418)	0
Distributions from non-consolidated entities in excess of accumulated earnings	4,705	157
Increase in deferred leasing costs	(1,124)	(609)
Change in real estate deposits, net	(190)	(3,102)
Net cash provided by investing activities	19,810	51,237
Cash flows from financing activities:
Dividends to common and preferred shareholders	(45,329)	(44,840)
Principal amortization payments	(7,389)	(7,494)
Principal payments on debt, excluding normal amortization	(254)	0
Revolving credit facility borrowings	0	20,000
Revolving credit facility payments	0	(80,000)
Deferred financing costs	(3,678)	(32)
Payment of early extinguishment of debt charges	(1)	0
Proceeds of mortgages and notes payable	0	500
Cash distributions to noncontrolling interests	(892)	(802)
Repurchases to settle tax obligations	(3,961)	(2,917)
Repurchase of common shares	(3,598)	(6,336)
Net cash provided by (used in) financing activities	(65,102)	(121,921)
Change in cash, cash equivalents and restricted cash	2,329	(14,463)
Cash, cash equivalents and restricted cash, at beginning of period	177,247	112,156
Cash, cash equivalents and restricted cash, at end of period	179,576	97,693
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents at beginning of period	168,750	107,762
Cash and cash equivalents at end of period	170,289	90,214
Restricted cash at beginning of period	8,497	4,394
Restricted cash at end of period	$ 9,287	$ 7,479