Fair Value Measurements and Derivatives - Effects of Fuel Collars Designated as Cash flow Hedges (Details 4) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
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Jun. 30, 2016 |
Jun. 30, 2015 |
Jun. 30, 2016 |
Jun. 30, 2015 |
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| Cash Flow Hedging | Designated as Hedging Instrument | Fuel Collars | ||||
| Derivative Instruments, Gain (Loss) [Line Items] | ||||
| Amount reclassified from accumulated other comprehensive income (loss) into fuel expense | $ 10 | $ 248 | ||
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition The effective portion of gain 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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