Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Operating Activities
Net income	$ 16,775	$ 14,372
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	11,937	11,290
Amortization of deferred financing fees	195	209
Gain on sale of real estate		(421)
Equity in income of joint ventures	(458)	(386)
Distributions from unconsolidated joint venture	618	555
Non-vested stock earned	1,223	626
Stock option expense	36	57
Changes in assets and liabilities (excluding the effects of acquisitions):
Accounts receivable	356	340
Prepaid expenses	(1,588)	(2,178)
Receipts from joint ventures	72	116
Accounts payable and other liabilities	(10,794)	(14,743)
Deferred revenue	224	342
Net cash provided by operating activities	18,596	10,179
Investing Activities
Acquisitions of storage facilities	(89,101)	(22,174)
Improvements, equipment additions, and construction in progress	(4,631)	(2,917)
Net proceeds from the sale of real estate		4,367
Investment in unconsolidated joint ventures		(198)
Property deposits	(1,161)
Net cash used in investing activities	(94,893)	(20,922)
Financing Activities
Net proceeds from sale of common stock	29,360	54,465
Proceeds from line of credit	92,000	16,000
Repayments of line of credit	(26,000)	(45,000)
Financing costs	(50)
Dividends paid-common stock	(22,111)	(14,614)
Distributions to noncontrolling interest holders	(135)	(96)
Redemption of operating partnership units		(306)
Mortgage principal payments	(31)	(45)
Net cash provided by financing activities	73,033	10,404
Net decrease in cash	(3,264)	(339)
Cash at beginning of period	9,524	7,255
Cash at end of period	6,260	6,916
Supplemental cash flow information
Cash paid for interest, net of interest capitalized	$ 6,140	$ 8,682