Goodwill And Intangible Assets (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010	Dec. 31, 2010
Goodwill And Intangible Assets
Amortization of intangible assets	$ 387,000	$ 278,000	$ 1,063,000	$ 892,000
Estimated amortization of intangible assets, remainder of 2011			325,000
Estimated amortization of intangible assets, 2012			1,298,000
Estimated amortization of intangible assets, 2013			1,295,000
Estimated amortization of intangible assets, 2014			1,289,000
Estimated amortization of intangible assets, 2015			1,288,000
Estimated amortization of intangible assets, 2016			684,000
Estimated amortization of intangible assets, thereafter			72,000
Amortizable intangible assets weighted average recognition period			4.9
Non-amortizable intangible assets related to restrictive covenant arrangements	$ 9,300,000		$ 9,300,000		$ 6,050,000