Goodwill And Intangible Assets (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Finite-Lived Intangible Assets [Line Items]
Amortization expense of intangibles assets	$ 638,000	$ 525,000	$ 1,800,000	$ 1,800,000
Amortization of acquired leases			$ 817,000	$ 406,000
Beneficial Leases [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets estimated useful life			30 years
Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets estimated useful life			45 years
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets estimated useful life			10 years