Other Intangible Assets (Schedule Of Other Intangible Assets) (Details) (b) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011 years	Dec. 31, 2010
Other Intangible Assets [Line Items]
Definite-lived intangibles, net	$ 22,351	$ 1,966
Other intangibles, net	28,991	1,966
Weighted average remaining life, years	7
Tradenames [Member]
Other Intangible Assets [Line Items]
Total indefinite-lived intangibles	6,640	0
Definite-lived intangibles, gross	1,920	0
Less accumulated amortization	(117)	0
Definite-lived intangibles, net	1,803	0
Weighted average remaining life, years	14
Covenants Not-To-Compete [Member]
Other Intangible Assets [Line Items]
Definite-lived intangibles, gross	22,406	22,111
Less accumulated amortization	(22,055)	(21,952)
Definite-lived intangibles, net	351	159
Weighted average remaining life, years	4
Contractual Relationships [Member]
Other Intangible Assets [Line Items]
Definite-lived intangibles, gross	22,690	1,980
Less accumulated amortization	(2,655)	(360)
Definite-lived intangibles, net	20,035	1,620
Weighted average remaining life, years	6
Technology [Member]
Other Intangible Assets [Line Items]
Definite-lived intangibles, gross	230	230
Less accumulated amortization	(68)	(43)
Definite-lived intangibles, net	$ 162	$ 187
Weighted average remaining life, years	6