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Condensed Consolidated Statements of Comprehensive Income (Loss) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Net income $ 1,973 $ 1,002 $ 1,905 $ 4,612
Other comprehensive income (loss):        
Unrealized gain (loss) on effective portion of fuel hedges, net of tax of $561 and $138 in 2013 and $2,513 and $2,257 in 2012, respectively 900 4,032 (222) 3,621
Reclassification of fuel hedge gains into statement of operations, net of tax of $119 and $119 in 2013 and $434 and $1,401 in 2012, respectively (191) (697) (190) (2,248)
Total other comprehensive income (loss) 709 3,335 (412) 1,373
Comprehensive income $ 2,682 $ 4,337 $ 1,493 $ 5,985