Goodwill And Intangible Assets (Summary Of Amortization Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization	$ 874	$ 398	$ 1,813	$ 1,223
Beneficial Leases [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization	578	191	968	574
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization	$ 296	$ 207	$ 845	$ 649