Consolidated Statement Of Equity (USD $) In Thousands, except Share data	Common Shares [Member]	Additional Paid-In Capital [Member]	Accumulated Dividends In Excess Of Net Income [Member]	Noncontrolling Interests - Unitholders In The Operating Partnership [Member]	Total
Balance at Dec. 31, 2011	$ 393	$ 653,645	$ (28,007)	$ 53,697	$ 679,728
Balance, shares at Dec. 31, 2011	39,283,796				39,283,796
Net income			1,988	883	2,871
Issuance of restricted stock, shares	2,000
Forfeiture of restricted stock, shares	(1,203)
Dividends declared and paid			(8,250)	(3,863)	(12,113)
Stock-based compensation		699			699
Balance at Mar. 31, 2012	$ 393	$ 654,344	$ (34,269)	$ 50,717	$ 671,185
Balance, shares at Mar. 31, 2012	39,284,593				39,284,593