Intangible Assets (Schedule Of Intangible Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 11,130	$ 12,372
Accumulated Amortization	(3,407)	(2,681)
Net Carrying Amount	7,723	9,691
Trademarks And Tradenames [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,786	3,028
Accumulated Amortization	(1,411)	(1,850)
Net Carrying Amount	375	1,178
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	9,344	9,344
Accumulated Amortization	(1,996)	(831)
Net Carrying Amount	$ 7,348	$ 8,513