CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
REVENUES:
Rental income	$ 167,934,000	$ 156,384,000	$ 500,868,000	$ 469,961,000
Tenant reimbursement income	15,579,000	14,053,000	42,989,000	38,761,000
Fee and other income	9,083,000	9,333,000	24,429,000	29,988,000
Total revenues	192,596,000	179,770,000	568,286,000	538,710,000
EXPENSES:
Operating	69,811,000	68,264,000	206,435,000	197,696,000
Depreciation and amortization	64,610,000	66,515,000	194,541,000	198,143,000
General and administrative	14,452,000	14,470,000	44,278,000	44,624,000
Transaction related costs	450,000	274,000	863,000	1,051,000
Real estate impairment loss			46,000,000
Total expenses	149,323,000	149,523,000	492,117,000	441,514,000
Operating income	43,273,000	30,247,000	76,169,000	97,196,000
Income from unconsolidated joint ventures	472,000	671,000	2,931,000	19,143,000
Loss from unconsolidated real estate funds	(188,000)	(3,930,000)	(268,000)	(6,053,000)
Interest and other income (loss), net	2,778,000	(17,668,000)	6,888,000	(11,982,000)
Interest and debt expense	(37,105,000)	(35,733,000)	(109,996,000)	(107,568,000)
Loss on early extinguishment of debt				(7,877,000)
Gain on sale of real estate	36,845,000		36,845,000	133,989,000
Unrealized gain on interest rate swaps				1,802,000
Net income (loss) before income taxes	46,075,000	(26,413,000)	12,569,000	118,650,000
Income tax (expense) benefit	(1,814,000)	1,010,000	(2,171,000)	(4,242,000)
Net income (loss)	44,261,000	(25,403,000)	10,398,000	114,408,000
Less net (income) loss attributable to noncontrolling interests in:
Consolidated joint ventures	(2,713,000)	14,217,000	(5,520,000)	11,029,000
Consolidated real estate fund	(86,000)	(114,000)	(668,000)	(20,195,000)
Operating Partnership	(3,931,000)	1,086,000	(381,000)	(12,068,000)
Net income (loss) attributable to common stockholders	$ 37,531,000	$ (10,214,000)	$ 3,829,000	$ 93,174,000
INCOME (LOSS) PER COMMON SHARE - BASIC:
Income (loss) per common share	$ 0.16	$ (0.04)	$ 0.02	$ 0.40
Weighted average shares outstanding	240,447,921	239,445,810	240,365,882	235,151,398
INCOME (LOSS) PER COMMON SHARE - DILUTED:
Income (loss) per common share	$ 0.16	$ (0.04)	$ 0.02	$ 0.40
Weighted average shares outstanding	240,489,138	239,445,810	240,391,184	235,177,683