Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash Flows from Operating Activities:
Net Income	$ 51,254	$ 148,969
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	33,972	38,095
Amortization of debt deferred costs and intangibles, net	820	781
Non-cash lease expense	299	0
Impairment loss	74	0
Equity in earnings of real estate joint ventures and partnerships, net	(5,417)	(5,993)
Gain on sale of property	(17,787)	(109,045)
Distributions of income from real estate joint ventures and partnerships	3,384	4,115
Changes in accrued rent, accrued contract receivables and accounts receivable, net	20,002	13,821
Changes in unamortized lease costs and other assets, net	(2,736)	(2,469)
Changes in accounts payable, accrued expenses and other liabilities, net	(28,742)	(26,860)
Other, net	1,257	(2,042)
Net cash provided by operating activities	56,380	59,372
Cash Flows from Investing Activities:
Acquisition of real estate and land	(19,699)	(1,265)
Development and capital improvements	(48,476)	(29,041)
Proceeds from sale of property and real estate equity investments, net	65,543	255,828
Real estate joint ventures and partnerships - Investments	(9,094)	(5,987)
Real estate joint ventures and partnerships - Distribution of capital	554	1,690
Proceeds from investments	8,375	250
Other, net	1,363	4,417
Net cash (used in) provided by investing activities	(1,434)	225,892
Cash Flows from Financing Activities:
Principal payments of debt	(1,576)	(151,931)
Changes in unsecured credit facilities	(5,000)	0
Proceeds from issuance of common shares of beneficial interest, net	727	914
Repurchase of common shares of beneficial interest, net	0	(8,108)
Common share dividends paid	(50,816)	(50,836)
Debt issuance and extinguishment costs paid	(147)	(782)
Distributions to noncontrolling interests	(1,572)	(884)
Contributions from noncontrolling interests	326	41
Other, net	(1,321)	621
Net cash used in financing activities	(59,379)	(210,965)
Net (decrease) increase in cash, cash equivalents and restricted cash equivalents	(4,433)	74,299
Cash, cash equivalents and restricted cash equivalents at January 1	76,137	21,334
Cash, cash equivalents and restricted cash equivalents at March 31	71,704	95,633
Cash paid for interest (net of amount capitalized of $2,921 and $1,440, respectively)	18,151	21,710
Cash paid for amounts included in lease liabilities	$ 1,015	$ 0