CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Net cash provided by operating activities:	$ 180,583	$ 181,475
Cash flows from investing activities:
Acquisition of real estate, including intangible assets	(70,297)	(197,926)
Investment in real estate under construction	(105,548)	(94,287)
Capital expenditures	(3,267)	(18,744)
Net proceeds from sale of properties	293,634	156,475
Principal payments received on loans receivable	214	4,334
Investment in loans receivable	0	(10,267)
Investments in non-consolidated entities	(33,554)	(10,322)
Distributions from non-consolidated entities in excess of accumulated earnings	7,299	1,171
Increase in deferred leasing costs	(6,165)	(4,242)
Change in restricted cash	(32,450)	3,596
Real estate deposits, net	(20,566)	(2,634)
Net cash provided by (used in) investing activities	29,300	(172,846)
Cash flows from financing activities:
Dividends to common and preferred shareholders	(123,287)	(123,529)
Principal amortization payments	(20,887)	(26,760)
Principal payments on debt, excluding normal amortization	(103,473)	(106,956)
Retirement of convertible notes	(672)	(529)
Change in revolving credit facility borrowings, net	(177,000)	73,000
Payment of developer liabilities	(4,016)	0
Change in restricted cash	0	(1,573)
Change in deferred financing costs	(1,841)	(7,339)
Proceeds of mortgages and notes payable	254,650	80,843
Cash distributions to noncontrolling interests	(2,528)	(2,865)
Purchase of noncontrolling interest	0	(4,022)
Issuance of common shares, net	2,686	17,312
Repurchase of common shares	(8,973)	(11,019)
Net cash used in financing activities	(185,341)	(113,437)
Change in cash and cash equivalents	24,542	(104,808)
Cash and cash equivalents, at beginning of period	93,249	191,077
Cash and cash equivalents, at end of period	117,791	86,269
LCIF [Member]
Net cash provided by operating activities:	31,767	27,933
Cash flows from investing activities:
Investment in real estate under construction	(23,390)	(9,111)
Capital expenditures	(1,226)	(5,901)
Net proceeds from sale of properties	185,219	0
Principal payments received on loans receivable	0	3,137
Investment in loans receivable	0	(318)
Investments in non-consolidated entities	(81)	(1,662)
Distributions from non-consolidated entities in excess of accumulated earnings	425	341
Increase in deferred leasing costs	(997)	(1,062)
Change in restricted cash	812	(666)
Real estate deposits, net	1,932	0
Net cash provided by (used in) investing activities	162,694	(15,242)
Cash flows from financing activities:
Distributions to partners	(50,200)	(13,368)
Principal amortization payments	(1,053)	(1,072)
Principal payments on debt, excluding normal amortization	(23,934)	(28,627)
Co-borrower debt payment	(58,000)	0
Change in deferred financing costs	(79)	(632)
Proceeds of mortgages and notes payable	0	29,193
Related party note payment	0	(8,250)
Related party advances (payments), net	(239)	14,233
Net cash used in financing activities	(133,505)	(8,523)
Change in cash and cash equivalents	60,956	4,168
Cash and cash equivalents, at beginning of period	19,130	8,328
Cash and cash equivalents, at end of period	$ 80,086	$ 12,496