Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
REVENUES:
Rental income	$ 133,755	$ 130,932
Tenant reimbursements	11,404	14,425
Other property income	287	725
Total revenues	145,446	146,082
EXPENSES
Property expenses	25,965	24,714
Real estate taxes	11,032	12,715
Provision for bad debts	0	242
Ground leases	829	776
General and administrative expenses	13,437	12,768
Acquisition-related expenses	62	128
Depreciation and amortization	50,440	51,487
Total expenses	101,765	102,830
OTHER (EXPENSES) INCOME:
Interest income and other net investment gains (Note 12)	271	360
Interest expense (Note 6)	(11,829)	(16,878)
Total other (expenses) income	(11,558)	(16,518)
INCOME FROM OPERATIONS BEFORE GAINS ON SALES OF REAL ESTATE	32,123	26,734
Gains on sale of land	0	17,268
Gains on sale of depreciable operating properties (Note 3)	145,990	0
NET INCOME	178,113	44,002
Net income attributable to noncontrolling common units of the Operating Partnership	(3,610)	(815)
Net income attributable to noncontrolling interest in consolidated subsidiary	(195)	0
Total income attributable to noncontrolling interest	(3,805)	(815)
NET INCOME ATTRIBUTABLE TO PARENT	174,308	43,187
PREFERRED DIVIDENDS	(3,313)	(3,313)
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS	$ 170,995	$ 39,874
Net income available to common stockholders per share – basic (Note 13) (in dollars per share)	$ 1.85	$ 0.45
Net income available to common stockholders per share – diluted (Note 13) (in dollars per share)	$ 1.84	$ 0.45
Weighted average common shares outstanding – basic (Note 13)	92,224,522	86,896,776
Weighted average common shares outstanding – diluted (Note 13)	92,734,543	87,434,366
Dividends declared per common share (in dollars per share)	$ 0.35	$ 0.35