Goodwill And Intangible Assets (Summary Of Amortizable Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 11,739	$ 9,989
Accumulated Amortization	(4,852)	(3,864)
Net	6,887	6,125
Deferred Financing Cost [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	8,291	6,541
Accumulated Amortization	(2,660)	(1,838)
Net	5,631	4,703
Customer And Non Compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,448	3,448
Accumulated Amortization	(2,192)	(2,026)
Net	$ 1,256	$ 1,422