Goodwill And Intangible Assets (Summary Of Amortization Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization	$ 664	$ 382	$ 1,068	$ 1,246
Beneficial Lease Amortization [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization	284	278	783	935
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization	$ 380	$ 104	$ 285	$ 311