Goodwill And Intangible Assets (Narrative) (Details) (USD $)	0 Months Ended	3 Months Ended	12 Months Ended			3 Months Ended			12 Months Ended
	Oct. 17, 2011	Dec. 31, 2011	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Mar. 31, 2009 Truckload [Member]	Sep. 30, 2010 Logistics [Member]	Mar. 31, 2010 Logistics [Member]	Dec. 31, 2009 Logistics [Member]	Mar. 31, 2010 Chic Logistics' [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense			$ 3,300,000	$ 3,300,000	$ 4,400,000
Impairment loss/charge					16,414,000	134,800,000	16,400,000		16,414,000
Impairment of intangible assets								2,800,000
Carrying amount of intangible assets										0
Proceeds from Previous Acquisition	$ 10,000,000	$ 10,000,000	$ 10,000,000