Goodwill And Other Intangible Assets (Schedule Of Components Of Other Intangible Assets) (Details) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 73,730	$ 73,730
Accumulated Amortization	(18,432)	(13,606)
Net Carrying Amount	55,298	60,124
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	51,755	51,755
Accumulated Amortization	(13,449)	(9,767)
Net Carrying Amount	38,306	41,988
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	15,400	15,400
Accumulated Amortization	(1,765)	(1,283)
Net Carrying Amount	13,635	14,117
Software And Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	4,850	4,850
Accumulated Amortization	(1,732)	(1,410)
Net Carrying Amount	3,118	3,440
Favorable Leases [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,725	1,725
Accumulated Amortization	(1,486)	(1,146)
Net Carrying Amount	$ 239	$ 579