CONSOLIDATED STATEMENT OF CHANGES IN EQUITY (USD $) In Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Distributions in Excess of Net Income [Member]	Noncontrolling Interest in Joint Ventures [Member]
BALANCE at Dec. 31, 2010	$ 411,506	$ 3	$ 591,106	$ (182,253)	$ 2,650
Net income	16,308	0	0	15,954	354
Common dividends declared - $1.56 per share	(42,381)	0	0	(42,381)	0
Stock-based compensation, net of forfeitures	2,203	0	2,203	0	0
Issuance of 15,000 shares of common stock, common stock offering, net of expenses	450	0	450	0	0
Issuance of 6,000 shares of common stock, options exercised	133	0	133	0	0
Issuance of 4,528 shares of common stock, dividend reinvestment plan	188	0	188	0	0
Withheld 3,564 shares of common stock to satisfy tax withholding obligations in connection with the vesting of restricted stock	(157)	0	(157)	0	0
Distributions to noncontrolling interest	(259)	0	0	0	(259)
BALANCE at Sep. 30, 2011	$ 387,991	$ 3	$ 593,923	$ (208,680)	$ 2,745