CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities:
Net income	$ 186,391	$ 285,293	$ 230,906
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	164,260	150,440	172,088
Gains on sales of properties	(139,039)	(250,889)	(252,913)
Debt satisfaction (gains) charges, net	(21,452)	4,517	2,596
Impairment charges	14,460	5,329	95,813
Straight-line rents	(13,602)	(14,264)	(20,207)
Amortization of right of use assets	3,763	3,645	0
Other non-cash (income) expense, net	6,210	6,060	(3,060)
Equity in (earnings) losses of non-consolidated entities	169	(2,890)	(1,708)
Distributions of accumulated earnings from non-consolidated entities	0	2,571	2,083
Change in accounts payable and other liabilities	2,859	(270)	(129)
Change in rent receivable and prepaid rent, net	80	3,770	(3,942)
Change in accrued interest payable	1,866	3,368	(891)
Other adjustments, net	(4,130)	(4,496)	(2,825)
Net cash provided by operating activities	201,835	192,184	217,811
Cash flows from investing activities:
Investment in real estate, including intangible assets	(611,754)	(662,010)	(315,959)
Investment in real estate under construction	(53,971)	(11,332)	0
Capital expenditures	(17,250)	(17,829)	(15,506)
Net proceeds from sale of properties	192,560	504,118	898,514
Investments in non-consolidated entities, net	(7,528)	(8,018)	(10,206)
Distributions from non-consolidated entities in excess of accumulated earnings	8,055	17,119	3,330
Payments of deferred leasing costs	(4,841)	(8,196)	(4,522)
Change in real estate deposits	379	(817)	(760)
Net cash provided by (used in) investing activities	(494,350)	(186,965)	554,891
Cash flows from financing activities:
Dividends to common and preferred shareholders	(118,384)	(122,843)	(175,537)
Principal amortization payments	(19,441)	(24,259)	(29,666)
Principal payments on debt, excluding normal amortization	0	(89,242)	(14,599)
Proceeds of mortgages and notes payable	0	0	26,350
Term loan payments	0	0	(300,000)
Revolving credit facility borrowings	170,000	110,000	150,000
Revolving credit facility payments	(170,000)	(110,000)	(310,000)
Proceeds from senior notes	396,932	0	0
Repurchase of senior notes	(112,312)	0	0
Payment for early extinguishment of debt	(11,094)	(3,505)	(5)
Payments of deferred financing costs	(3,803)	(5,456)	(690)
Cash distributions to noncontrolling interests	(1,905)	(2,763)	(3,429)
Cash contributions from noncontrolling interests	1,285	867	0
Repurchase of common shares	(11,042)	(3,598)	(47,217)
Issuance of common shares, net of costs and repurchases to settle tax obligations	222,390	197,643	(2,818)
Net cash provided by (used in) financing activities	342,626	(53,156)	(707,611)
Change in cash, cash equivalents and restricted cash	50,111	(47,937)	65,091
Cash, cash equivalents and restricted cash, at beginning of year	129,310	177,247	112,156
Cash, cash equivalents and restricted cash, at end of year	$ 179,421	$ 129,310	$ 177,247