Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements and Derivatives - Consolidated financial statements of fuel swaps dedesignated and immediately recognized into earnings (Details 3)

v3.4.0.3
Fair Value Measurements and Derivatives - Consolidated financial statements of fuel swaps dedesignated and immediately recognized into earnings (Details 3) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Reclassification out of Accumulated Other Comprehensive Income | Fuel Swaps    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Amount reclassified from accumulated other comprehensive income (loss) into other income (expense) $ 1,529