Consolidated Statements Of Cash Flows (USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash flow from operating activities:
Net income	$ 8,400,000	$ 3,325,000
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in income of unconsolidated joint venture		(1,432,000)
Distributions from unconsolidated joint venture		1,432,000
Impairment reversals, net	(1,100,000)	(1,138,000)
Gain on extinguishment of debt	(1,298,000)
Gain on sales	(346,000)	(1,231,000)
Straight-line rents	(1,195,000)	(782,000)
Provision for doubtful accounts	1,188,000	2,053,000
Depreciation and amortization	33,079,000	34,825,000
Amortization of intangible lease liabilities	(3,409,000)	(4,164,000)
Expense and market price adjustments relating to share-based compensation, net	2,692,000	2,614,000
Amortization (including accelerated write-off) of deferred financing costs	1,870,000	4,246,000
Changes in operating assets and liabilities, net of effects of acquisitions and dispositions:
Rents and other receivables, net	(2,901,000)	(1,335,000)
Prepaid expenses and other	(4,454,000)	(2,025,000)
Accounts payable and accrued liabilities	1,450,000	294,000
Net cash provided by operating activities	33,976,000	36,682,000
Cash flow from investing activities:
Expenditures for real estate improvements	(14,912,000)	(22,069,000)
Net proceeds from sales of real estate	17,381,000	18,775,000
Repayment of note receivable	1,100,000
Distributions of capital from unconsolidated joint venture		2,895,000
Construction escrows and other	1,707,000	2,589,000
Net cash provided by investing activities	5,276,000	2,190,000
Cash flow from financing activities:
Net advances/(repayments) under credit facility	24,000,000	(73,317,000)
Mortgage repayments	(65,707,000)	(53,279,000)
Payments of debt financing costs	(1,905,000)	(4,405,000)
Noncontrolling interests:
Distributions to consolidated joint venture minority interests	(665,000)	(3,608,000)
Distributions to limited partners	(40,000)	(85,000)
Redemptions of OP Units	(160,000)
Common stock sales and issuance expenses, net	(65,000)	(169,000)
Net proceeds from sales of preferred stock	59,849,000	124,370,000
Redemption of preferred stock	(34,992,000)	(12,141,000)
Preferred stock dividends	(10,827,000)	(10,084,000)
Distributions to common shareholders	(10,819,000)	(10,808,000)
Net cash (used in) financing activities	(41,331,000)	(43,526,000)
Net (decrease) in cash and cash equivalents	(2,079,000)	(4,654,000)
Cash and cash equivalents at beginning of period	7,522,000	12,070,000
Cash and cash equivalents at end of period	$ 5,443,000	$ 7,416,000