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Effects of Derivatives Designated as Cash Flow Hedges (Detail) (Cash Flow Hedge, Fuel Swaps, USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 9 Months Ended | 12 Months Ended | ||||
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Sep. 30, 2013
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Sep. 30, 2012
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Sep. 30, 2013
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Sep. 30, 2012
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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Cash Flow Hedge | Fuel Swaps
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| Derivative Instruments, Gain (Loss) [Line Items] | |||||||
| Gain recognized in other comprehensive income (loss)-effective portion | $ 13,500 | $ 30,848 | $ 132 | $ 23,029 | $ 18,906 | $ 29,928 | $ 5,851 |
| Gain (loss) recognized in other income (expense) - ineffective portion | (83) | 157 | (182) | (473) | (509) | 457 | 140 |
| Amount reclassified from accumulated comprehensive income (loss) into fuel expense | (2,081) | (1,600) | (5,080) | (13,932) | (14,448) | (36,686) | (3,065) |
| Effect of derivative on consolidated financial statements | $ 3,949 | $ (6,301) | $ 2,926 | ||||
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- Definition
Derivative Instruments, Effect On Financial Statements No definition available.
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- Details
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- Definition
The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments representing (a) the amount of the hedge ineffectiveness and (b) the amount, if any, excluded from the assessment of hedge effectiveness. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The effective portion of gains on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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