CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flow from operating activities:
Net (loss) income	$ (24,150)	$ 87,241
Adjustments to reconcile net (loss) income to net cash flow provided by operating activities:
Depreciation and amortization	181,160	194,600
Stock-based compensation	7,976	4,051
Amortization and write-off of debt issuance costs and fair market value of debt adjustments	1,896	1,151
Equity in net loss (income) of joint ventures	2,382	(15,538)
Reserve of preferred equity interests	76,000	0
Operating cash distributions from joint ventures	3,446	3,779
Gain on disposition of real estate	(82,726)	(26,102)
Impairment charges	50,069	0
Change in notes receivable accrued interest	(3,131)	(5,502)
Net change in accounts receivable	3,519	2,619
Net change in accounts payable and accrued expenses	2,443	(4,357)
Net change in other operating assets and liabilities	(9,742)	(11,062)
Total adjustments	233,292	143,639
Net cash flow provided by operating activities	209,142	230,880
Cash flow from investing activities:
Real estate acquired, net of liabilities and cash assumed	(86,066)	(59,886)
Real estate developed and improvements to operating real estate	(56,431)	(91,116)
Proceeds from disposition of real estate	300,474	243,220
Equity contributions to joint ventures	(69,068)	(1,406)
Distributions from unconsolidated joint ventures	7,025	20,510
Repayment of joint venture advances, net	1,190	0
Issuance of notes receivable	0	(4,611)
Repayment of notes receivable	31,068	305
Net cash flow provided by investing activities	128,192	107,016
Cash flow from financing activities:
Proceeds from revolving credit facilities, net	0	55,000
Proceeds from issuance of senior notes, net of offering expenses	445,271	0
Repayment of senior notes	(300,000)	(240,000)
Repayment of mortgage debt	(73,475)	(15,750)
Payment of debt issuance costs	(532)	(41)
Proceeds from issuance of preferred shares, net of offering expenses	168,903	0
Issuance of common shares in conjunction with equity award plans and dividend reinvestment plan	9,884	1,785
Distributions to non-controlling interests and redeemable operating partnership units	(423)	(575)
Dividends paid	(150,655)	(143,684)
Net cash flow provided by (used for) financing activities	98,973	(343,265)
Effect of foreign exchange rate changes on cash and cash equivalents	4	3
Net increase (decrease) in cash, cash equivalents and restricted cash	436,307	(5,369)
Cash, cash equivalents and restricted cash, beginning of period	39,225	32,520
Cash, cash equivalents and restricted cash, end of period	$ 475,536	$ 27,154