CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Statement of Cash Flows [Abstract]
Net cash provided by operating activities	$ 142,919	$ 169,656
Cash flows from investing activities:
Acquisition of real estate, including intangible assets	(439,885)	(207,791)
Capital expenditures	(12,130)	(11,349)
Net proceeds from sale of properties	334,395	807,739
Investments in non-consolidated entities	(1,776)	(8,580)
Distributions from non-consolidated entities in excess of accumulated earnings	14,830	590
Increase in deferred leasing costs	(5,231)	(3,074)
Change in real estate deposits, net	(4,936)	(85)
Net cash provided by (used in) investing activities	(114,733)	577,450
Cash flows from financing activities:
Dividends to common and preferred shareholders	(96,117)	(132,088)
Principal amortization payments	(20,050)	(22,622)
Principal payments on debt, excluding normal amortization	(67,229)	(6,708)
Term loan payment	0	(151,000)
Revolving credit facility borrowings	110,000	150,000
Revolving credit facility payments	(110,000)	(310,000)
Deferred financing costs	(5,456)	(667)
Payment of early extinguishment of debt charges	(3,500)	0
Proceeds from mortgages and notes payable	0	26,350
Cash distributions to noncontrolling interests	(2,196)	(2,699)
Repurchases to settle tax obligations	(5,368)	(2,818)
Issuance of common shares, net	131,831	0
Repurchase of common shares	(3,598)	(15,023)
Net cash provided by (used in) financing activities	(71,683)	(467,275)
Change in cash, cash equivalents and restricted cash	(43,497)	279,831
Cash, cash equivalents and restricted cash, at beginning of period	177,247	112,156
Cash, cash equivalents and restricted cash, at end of period	133,750	391,987
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	126,058	128,444
Restricted cash at beginning of period	8,497	4,394
Restricted cash at end of period	$ 7,692	$ 263,543