Acquisitions and Dispositions (Details 2) (USD $) In Thousands, except Per Share data	3 Months Ended	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Revenues
Master lease rent	$ 14,434	$ 13,879	$ 29,452	$ 27,938
Property operating	53,849	46,760	106,203	92,290
Straight-line rent	1,110	725	2,396	1,326
Other operating	2,054	2,102	4,358	4,272
Revenues	73,272	63,935	145,883	126,933
Expenses
General and administrative	5,158	3,542	10,939	8,270
Property operating	28,477	24,237	56,572	48,435
Depreciation	19,120	16,450	38,015	32,654
Expenses	54,618	45,282	109,338	91,514
Other Income (Expense)
Interest and other income, net	203	1,176	431	1,612
Other income (expense)	(17,141)	(14,394)	(41,173)	(30,748)
Discontinued Operations
Income from discontinued operations	498	730	988	2,281
INCOME FROM DISCONTINUED OPERATONS	498	2,255	877	6,502
Income from Discontinued Operations per Common Share - Basic	$ 0.01	$ 0.04	$ 0.02	$ 0.10
Income from Discontinued Operations per Common Share - Diluted	$ 0.01	$ 0.03	$ 0.02	$ 0.10
Discontinued Operations [Member]
Revenues
Master lease rent	669	888	1,337	2,749
Property operating	135	592	375	1,206
Straight-line rent	(1)	9	(1)	(7)
Other operating				1
Revenues	803	1,489	1,711	3,949
Expenses
General and administrative	2	4	3	6
Property operating	303	543	705	1,104
Bad debt, net		21	15	21
Depreciation		374		761
Expenses	305	942	723	1,892
Other Income (Expense)
Interest and other income, net		183		224
Other income (expense)		183		224
Discontinued Operations
Income from discontinued operations	498	730	988	2,281
Impairment			(147)
Gain on sales of real estate properties		1,525	36	4,221
INCOME FROM DISCONTINUED OPERATONS	$ 498	$ 2,255	$ 877	$ 6,502
Income from Discontinued Operations per Common Share - Basic		$ 0.04		$ 0.1
Income from Discontinued Operations per Common Share - Diluted		$ 0.03		$ 0.1

Gain on sales of real estate properties included in discontinued operations.

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Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.

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