Leases (Tables)

12 Months Ended

Dec. 31, 2012

Leases, Operating [Abstract]

Future Minimum Lease Payments Under Non-Cancelable Revenue Equipment Operating Leases

At December 31, 2012, the future minimum lease payments under non-cancelable revenue equipment operating leases are as follows (in thousands):

2013	$	1,604
2014	1,604
2015	600
Total	$	3,808

Rental Expense Under Non-cancelable Revenue Equipment Operating Leases

Rental expense under these non-cancelable revenue equipment operating leases for the years ended December 31, 2012 and 2011 was as follows (in thousands):

2012	$	1,620
2011	1,012