CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities:
Net income	$ 39,789	$ 38,580
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation	53,707	38,355
Net amortization of debt discounts, premiums and deferred financing fees	1,650	1,456
Straight line rental income	(3,509)	(1,583)
Amortization of acquired real estate leases and other intangible assets	(1,198)	722
Impairment of assets		721
Lease termination fees	(105)
Gain on sale of properties		(156)
Equity in earnings of an investee	(72)	97
Change in assets and liabilities:
Restricted cash	2,860	2,012
Other assets	(7,751)	3,082
Accrued interest	11,938	6,060
Other liabilities	6,828	771
Cash provided by operating activities	104,137	90,117
Cash flows from investing activities:
Real estate acquisitions and deposits	(509,045)	(50,050)
Real estate improvements	(12,339)	(17,101)
Proceeds from sale of properties	250	2,400
Cash used for investing activities	(521,134)	(64,751)
Cash flows from financing activities:
Net proceeds from issuance of common shares issued in public offering	659,750
Proceeds from borrowings on revolving credit facility	515,000	90,000
Repayments of borrowings on revolving credit facility	(595,000)	(45,000)
Repayment of other debt	(32,440)	(3,246)
Payment of deferred financing fees	(583)
Distributions to shareholders	(79,530)	(73,386)
Cash provided by (used for) financing activities	467,197	(31,632)
Increase (decrease) in cash and cash equivalents	50,200	(6,266)
Cash and cash equivalents at beginning of period	27,594	27,594
Cash and cash equivalents at end of period	77,794	32,967
Supplemental cash flow information:
Interest paid	22,354	21,384
Income taxes paid		200
Non-cash investing activities:
Acquisitions funded by assumed debt	(29,955)
Non-cash financing activities:
Assumption of mortgage notes payable	29,955
Issuance of common shares	$ 808	$ 438