Goodwill And Other Intangible Assets (Schedule Of Components Of Other Intangible Assets) (Details) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Gross Carrying Amount	$ 73,730	$ 73,730
Accumulated Amortization	(16,860)	(13,606)
Net Carrying Amount	56,870	60,124
Customer Relationships [Member]
Gross Carrying Amount	51,755	51,755
Accumulated Amortization	(12,222)	(9,767)
Net Carrying Amount	39,533	41,988
Trade Names [Member]
Gross Carrying Amount	15,400	15,400
Accumulated Amortization	(1,604)	(1,283)
Net Carrying Amount	13,796	14,117
Software And Technology [Member]
Gross Carrying Amount	4,850	4,850
Accumulated Amortization	(1,625)	(1,410)
Net Carrying Amount	3,225	3,440
Favorable Leases [Member]
Gross Carrying Amount	1,725	1,725
Accumulated Amortization	(1,409)	(1,146)
Net Carrying Amount	$ 316	$ 579