Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013
Cash flows from operating activities:
Net income	$ 45,678		$ 22,668
Adjustments to reconcile net income to net cash provided by operating activities:
Change in fair value of derivatives	6		(107)
Gain on sale of property	(6,069)		0
Depreciation and amortization of deferred leasing costs	30,745		39,316
Amortization of deferred debt costs	969		934
Non cash compensation costs of stock grants and options	977		935
Provision for credit losses	480		740
Increase in accounts receivable and accrued income	(3,282)		(3,862)
Additions to deferred leasing costs	(2,830)		(4,560)
Increase in prepaid expenses	(2,825)		(3,544)
Increase in other assets	(355)		(1,158)
Increase (decrease) in accounts payable, accrued expenses and other liabilities	4,172		(1,670)
Decrease in deferred income	(1,537)		(1,248)
Net cash provided by operating activities	66,129		48,444
Cash flows from investing activities:
Acquisitions of real estate investments (1)	(48,545)	[1]	(4,250)
Additions to real estate investments	(11,174)		(10,303)
Additions to development and redevelopment projects	(10,193)		(5,554)
Proceeds from sale of property	6,679		0
Net cash used in investing activities	(63,233)		(20,107)
Cash flows from financing activities:
Proceeds from notes payable	0	[1]	101,600
Repayments on notes payable	(16,462)		(65,956)
Proceeds from revolving credit facility	41,000		142,000
Repayments on revolving credit facility	(11,000)		(180,000)
Proceeds from construction loan	1,859		0
Additions to deferred debt costs	(1,286)		(1,465)
Proceeds from the issuance of:
Common stock	12,054		19,800
Partnership units	8,877		0
Preferred stock redemption costs	0		(9)
Distributions to:
Common stockholders	(23,997)		(21,815)
Noncontrolling interest	(8,597)		(7,467)
Net cash used in financing activities	(7,171)		(28,774)
Net decrease in cash and cash equivalents	(4,275)		(437)
Cash and cash equivalents, beginning of period	17,297		12,133
Cash and cash equivalents, end of period	13,022		11,696
Series C Preferred Stock
Proceeds from the issuance of:
Series C preferred stock	0		135,221
Distributions to:
Preferred stockholders	(7,219)		(3,689)
Series A Preferred Stock
Proceeds from the issuance of:
Preferred stock redemption payments	0		(60,000)
Distributions to:
Preferred stockholders	(2,400)		(4,413)
Series B Preferred Stock
Proceeds from the issuance of:
Preferred stock redemption payments	0		(79,328)
Distributions to:
Preferred stockholders	$ 0		$ (3,253)

[1] The 2014 acquisition of real estate and proceeds from notes payable each exclude $11,000 in connection with the sale and leaseback of the Company's Olney property.