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Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Net income $ 11,001 $ 3,780 $ 21,228 $ 2,406
Other comprehensive income:        
Unrealized gain (loss) on effective portion of fuel hedges, net of tax of $889 and $174 in 2015 and $787 and $259 in 2014, respectively 1,432 1,263 (280) 417
Reclassification of fuel hedge loss (gain) into statement of operations, net of tax of $1,174 and $2,478 in 2015 and $122 and $227 in 2014, respectively 1,892 (196) 3,992 (364)
Total other comprehensive income 3,324 1,067 3,712 53
Comprehensive income $ 14,325 $ 4,847 $ 24,940 $ 2,459