Goodwill And Intangible Assets (Summary Of Amortizable Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 17,971	$ 9,989
Accumulated Amortization	(5,279)	(3,864)
Net	12,692	6,125
Deferred Financing Cost [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	14,523	6,541
Accumulated Amortization	(3,029)	(1,838)
Net	11,494	4,703
Customer And Non Compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,448	3,448
Accumulated Amortization	(2,250)	(2,026)
Net	$ 1,198	$ 1,422