FAIR VALUE MEASUREMENTS (Details) (USD $)	3 Months Ended		9 Months Ended			3 Months Ended	9 Months Ended		3 Months Ended	9 Months Ended
	Sep. 30, 2013	Mar. 31, 2013	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Sep. 30, 2013 Allied Transportation Company [Member]	Sep. 30, 2013 Allied Transportation Company [Member]	Nov. 01, 2012 Allied Transportation Company [Member]	Sep. 30, 2013 United Holdings LLC [Member]	Sep. 30, 2013 United Holdings LLC [Member]	Apr. 15, 2011 United Holdings LLC [Member]	Sep. 30, 2013 Recurring [Member]	Dec. 31, 2012 Recurring [Member]	Sep. 30, 2013 Quoted Prices In Active Markets For Identical Assets (Level 1) Recurring [Member]	Dec. 31, 2012 Quoted Prices In Active Markets For Identical Assets (Level 1) Recurring [Member]	Sep. 30, 2013 Significant Other Observable Inputs (Level 2) Recurring [Member]	Dec. 31, 2012 Significant Other Observable Inputs (Level 2) Recurring [Member]	Sep. 30, 2013 Significant Unobservable Inputs (Level 3) Recurring [Member]	Dec. 31, 2012 Significant Unobservable Inputs (Level 3) Recurring [Member]
Assets [Abstract]
Derivatives												$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0
Liabilities [Abstract]
Derivatives												49,000	1,525,000	0	0	49,000	1,525,000	0	0
Contingent liabilities												4,894,000	28,067,000	0	0	0	0	4,894,000	28,067,000
Liabilities fair value												4,943,000	29,592,000	0	0	49,000	1,525,000	4,894,000	28,067,000
Business Acquisition [Line Items]
Earnout Provision								10,000,000			50,000,000
Fair value contingent earn out liability						4,894,000	4,894,000	9,756,000	0	0	16,300,000
Payment of contingent liability	5,000,000	5,000,000	5,000,000	0
Increase (decrease) in fair value of contingent liability						14,000	127,000		(7,900,000)	(18,300,000)
Estimated fair value of outstanding debt	829,056,000		829,056,000		1,130,967,000
Carrying amount of debt	860,930,000		860,930,000		1,135,110,000
Impaired long-lived assets	$ 0