Goodwill And Intangible Assets (Schedule Of Intangible Assets) (Details) (USD $)	Sep. 30, 2011	Dec. 31, 2010
Carrying Amount	$ 26,786,000	$ 27,072,000
Accumulated Amortization	(8,799,000)	(5,848,000)
Net	17,987,000	21,224,000
Unamortized intangible assets	10,200,000	10,200,000
Other Intangible Asset [Member]
Other intangible asset included in unamortized intangible assets	2,000,000
Unclassified Indefinite-lived Intangible Assets [Member]
Other intangible asset included in unamortized intangible assets	8,200,000
Customer Relationships [Member]
Carrying Amount	18,013,000	17,658,000
Accumulated Amortization	(4,416,000)	(2,844,000)
Net	13,597,000	14,814,000
Non-Compete Agreements [Member]
Carrying Amount	1,291,000	2,047,000
Accumulated Amortization	(261,000)	(84,000)
Net	1,030,000	1,963,000
Trade Name [Member]
Carrying Amount	140,000	150,000
Accumulated Amortization	(140,000)	(150,000)
Backlog [Member]
Carrying Amount	7,342,000	7,217,000
Accumulated Amortization	(3,982,000)	(2,770,000)
Net	$ 3,360,000	$ 4,447,000