Discontinued Operations (Schedule Of Income From Discontinued Operations) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Revenues [Abstract]
Revenues	$ 0	$ 30	$ 0	$ 243
Operating Expenses [Abstract]
Depreciation	0	6	0	39
Income from operations - discontinued	0	24	0	204
Gain (Loss) on Sale of Properties, Net of Applicable Income Taxes	0	1,048	0	3,348
Income from discontinued operations	$ 0	$ 1,072	$ 0	$ 3,552
Earnings Per Share, Basic, Other Disclosures [Abstract]
Weighted Average Number of Shares Outstanding, Basic	27,830,311	27,729,560	27,799,750	27,711,474
Weighted Average Number of Shares Outstanding, Diluted	27,862,582	27,789,725	27,828,879	27,795,150
Earnings Per Share, Basic and Diluted [Abstract]
Income (Loss) from Discontinued Operations, Net of Tax, Per Basic Share	$ 0.00	$ 0.04	$ 0.00	$ 0.13
Discontinued operations	$ 0.00	$ 0.04	$ 0.00	$ 0.13