Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2012

Commitments and Contingencies [Abstract]

Future Minimum Rental Payments

The Company has revenue equipment leases expiring at various dates through October 2019 and various properties under non-cancelable agreements expiring through May 2024.  The aggregate future minimum rentals under non-cancelable operating leases at December 31, 2012 were as follows:

	(in thousands)
Year Due	Amount Due
2013	$	43,855
2014		35,310
2015		25,814
2016		8,427
2017		5,558
Thereafter		9,028
Total Due	$	127,992