Quarterly report pursuant to Section 13 or 15(d)

Effects of Fuel Collars Designated as Cash flow Hedges (Detail)

v2.4.0.8
Effects of Fuel Collars Designated as Cash flow Hedges (Detail) (Cash Flow Hedging, Fuel Collars, USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Cash Flow Hedging | Fuel Collars
       
Fair Value, Option, Quantitative Disclosures [Line Items]        
Loss recognized in other comprehensive loss - effective portion $ (1,500) $ (11,674) $ (1,535) $ (2,619)
Gain (loss) recognized in other income (expense) - ineffective portion 14 (1,019) 22 (337)
Amount reclassified from accumulated other comprehensive income (loss) into fuel expense $ 391 $ (1,416) $ 818 $ (4,270)