CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
REVENUE
Total revenue	$ 328,886	$ 300,170	$ 647,181	$ 598,195
EXPENSES
Depreciation and amortization	133,999	123,089	265,102	244,186
Interest	66,628	63,679	126,043	122,985
General and administrative	17,954	15,781	33,638	29,346
Property (including reimbursable)	16,236	16,486	32,788	35,561
Income taxes	1,208	441	2,431	1,488
Provisions for impairment	3,951	2,274	18,172	7,706
Total expenses	239,976	221,750	478,174	441,272
Gain on sales of real estate	7,787	2,839	11,005	13,371
Net income	96,697	81,259	180,012	170,294
Net income attributable to noncontrolling interests	(317)	(123)	(469)	(288)
Net income attributable to the Company	96,380	81,136	179,543	170,006
Preferred stock dividends	0	0	0	(3,911)
Excess of redemption value over carrying value of preferred shares redeemed	0	0	0	(13,373)
Net income available to common stockholders	$ 96,380	$ 81,136	$ 179,543	$ 152,722
Amounts available to common stockholders per common share:
Net income, basic and diluted	$ 0.34	$ 0.30	$ 0.63	$ 0.57
Weighted average common shares outstanding:
Basic (in shares)	284,928,969	272,588,332	284,469,689	268,024,691
Diluted (in shares)	285,372,256	273,099,487	284,924,336	268,569,855
Rental revenue
REVENUE
Total revenue	$ 313,870	$ 288,049	$ 620,418	$ 573,870
Tenant reimbursements
REVENUE
Total revenue	11,395	11,756	22,695	22,985
Other revenue
REVENUE
Total revenue	$ 3,621	$ 365	$ 4,068	$ 1,340