FAIR VALUE MEASUREMENTS (Details) (USD $)	3 Months Ended			3 Months Ended			3 Months Ended		12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Mar. 31, 2014 Allied Transportation Company [Member]	Mar. 31, 2013 Allied Transportation Company [Member]	Nov. 01, 2012 Allied Transportation Company [Member]	Mar. 31, 2014 United Holdings LLC [Member]	Mar. 31, 2013 United Holdings LLC [Member]	Dec. 31, 2013 United Holdings LLC [Member]	Apr. 15, 2011 United Holdings LLC [Member]	Dec. 31, 2013 Recurring [Member]	Dec. 31, 2013 Quoted Prices In Active Markets For Identical Assets (Level 1) Recurring [Member]	Dec. 31, 2013 Significant Other Observable Inputs (Level 2) Recurring [Member]	Dec. 31, 2013 Significant Unobservable Inputs (Level 3) Recurring [Member]
Assets [Abstract]
Derivatives											$ 0	$ 0	$ 0	$ 0
Liabilities [Abstract]
Derivatives											59,000	0	59,000	0
Contingent liabilities											4,903,000	0	0	4,903,000
Liabilities fair value											4,962,000	0	59,000	4,903,000
Business Acquisition [Line Items]
Earnout Provision						10,000,000				50,000,000
Fair value contingent earn out liability				0		9,756,000		0		16,300,000
Payment of contingent liability	4,756,000	5,000,000		5,000,000	5,000,000
Increase (decrease) in fair value of contingent liability				97,000	99,000		0	(4,300,000)	0
Estimated fair value of outstanding debt	674,988,000		710,377,000
Carrying amount of debt	$ 708,000,000		$ 749,150,000