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	$ 6,658	$ 4,865
Adjustments to reconcile income from operations to net cash provided by operating activities:
Deferred rent revenue and amortization of lease intangibles	(1,545)	(1,163)
Depreciation and amortization	16,341	17,013
Amortization of debt issuance costs and debt fair value adjustments	1,015	983
Stock-based compensation expense	519	676
Other, net	(362)	(1,202)
Changes in operating assets and liabilities
Change in restricted cash	(1,141)	(500)
Change in accounts receivable	1,022	(1,198)
Change in other assets	(392)	(216)
Change in accounts payable and accrued expenses	4,705	5,956
Change in security deposits payable	58	211
Change in other liabilities and deferred credits	1,115	247
Net cash provided by operating activities	27,993	25,672
INVESTING ACTIVITIES
Capital expenditures	(30,300)	(9,902)
Change in restricted cash	(303)	518
Leasing commissions	(996)	(338)
Net cash used in investing activities	(31,599)	(9,722)
FINANCING ACTIVITIES
Change in restricted cash	0	1,400
Repayment of secured notes payable	(405)	(943)
Proceeds from term loan	100,000	0
Repayment of line of credit	(93,000)	0
Debt issuance costs	(1,957)	0
Proceeds from issuance of common stock, net	46,926	0
Dividends paid to common stock and unitholders	(13,140)	(12,114)
Shares withheld for employee taxes	(4,319)	0
Net cash (used in) provided by financing activities	34,105	(14,457)
Net increase (decrease) in cash and cash equivalents	30,499	1,493
Cash and cash equivalents, beginning of period	48,987	42,479
Cash and cash equivalents, end of period	$ 79,486	$ 43,972