CONSOLIDATED STATEMENTS OF CASH FLOWS $ in Thousands	9 Months Ended
	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)
Operating Activities
Net income	$ 61,329	$ 41,015
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	124,502	116,467
Equity in losses of real estate ventures	1,817	199
Equity compensation expense	1,983	1,250
Accretion of fair market value adjustment of debt	(913)	(1,173)
Changes in other operating accounts:
Restricted cash	404	507
Other assets	(6,833)	(3,277)
Accounts payable and accrued expenses	17,561	6,086
Other liabilities	1,571	1,417
Net cash provided by operating activities	201,421	162,491
Investing Activities
Acquisitions of storage facilities	(313,954)	(161,852)
Additions and improvements to storage facilities	(23,072)	(18,336)
Development costs	(134,136)	(58,399)
Investment in real estate ventures, at equity	(7,911)
Cash distributed from real estate ventures	5,970	4,685
Fundings of notes receivable		(4,100)
Change in restricted cash	970	99
Net cash used in investing activities	(472,133)	(237,903)
Proceeds from:
Unsecured senior notes	298,512
Revolving credit facility	830,000	671,800
Principal payments on:
Revolving credit facility	(830,000)	(582,000)
Mortgage loans and notes payable	(36,648)	(76,929)
Loan procurement costs	(2,467)	(2,283)
Proceeds from issuance of common shares, net	136,151	136,663
Exercise of stock options	12,573	13,396
Contributions from noncontrolling interests in subsidiaries	4,447	178
Distributions paid to common shareholders	(111,466)	(79,706)
Distributions paid to preferred shareholders	(4,506)	(4,506)
Distributions paid to noncontrolling interests in Operating Partnership	(1,374)	(1,084)
Net cash provided by financing activities	295,222	75,529
Change in cash and cash equivalents	24,510	117
Cash and cash equivalents at beginning of period	62,869	2,901
Cash and cash equivalents at end of period	87,379	3,018
Supplemental Cash Flow and Noncash Information
Cash paid for interest, net of interest capitalized	38,110	35,567
Supplemental disclosure of noncash activities:
Restricted cash - acquisition of storage facilities	(22,019)
Accretion of liability	23,393	11,421
Derivative valuation adjustment	1,752	206
Foreign currency translation adjustment		(284)
Discount on issuance of unsecured senior notes	1,488
Mortgage loan assumptions	$ 41,513	$ 2,695