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Changes in Accumulated Other Comprehensive Income (Loss)
 6 Months Ended
Jun. 30, 2018
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]  
Changes in Accumulated Other Comprehensive Income (Loss)
Changes in Accumulated Other Comprehensive Income (Loss)
 
The following table presents the changes in accumulated other comprehensive income (loss) by component for the six months ended June 30, 2018 and 2017 (in thousands):

 
Accumulated Other Comprehensive Income (Loss) for the Six Months Ended June 30, 2018
 
Accumulated Other Comprehensive Income (Loss) for the Six Months Ended June 30, 2017
 
Changes
related to
cash flow
derivative
hedges
 
Changes in
defined
benefit plans
 
Foreign
currency
translation
adjustments
 
Accumulated other
comprehensive loss
 
Changes
related to
cash flow
derivative
hedges
 
Changes in
defined
benefit plans
 
Foreign
currency
translation
adjustments
 
Accumulated other
comprehensive loss
Accumulated comprehensive loss at beginning of the year
$
(250,355
)
 
$
(33,666
)
 
$
(50,244
)
 
$
(334,265
)
 
$
(820,850
)
 
$
(28,083
)
 
$
(67,551
)
 
$
(916,484
)
Other comprehensive income (loss) before reclassifications
69,932

 
5,082

 
(10,361
)
 
64,653

 
43,408

 
(4,847
)
 
8,321

 
46,882

Amounts reclassified from accumulated other comprehensive loss
3,698

 
714

 
—

 
4,412

 
108,007

 
557

 
—

 
108,564

Net current-period other comprehensive income (loss)
73,630

 
5,796

 
(10,361
)
 
69,065

 
151,415

 
(4,290
)
 
8,321

 
155,446

Ending balance
$
(176,725
)
 
$
(27,870
)
 
$
(60,605
)
 
$
(265,200
)
 
$
(669,435
)
 
$
(32,373
)
 
$
(59,230
)
 
$
(761,038
)


The following table presents reclassifications out of accumulated other comprehensive income (loss) for the quarters and six months ended June 30, 2018 and 2017 (in thousands):

 
 
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income
 
 
Details About Accumulated Other Comprehensive Income (Loss) Components
 
Quarter Ended June 30, 2018
 
Quarter Ended June 30, 2017
 
Six Months Ended June 30, 2018
 
Six Months Ended June 30, 2017
 
Affected Line Item in Statements of
Comprehensive Income (Loss)
Gain (loss) on cash flow derivative hedges:
 
 

 
 
 
 

 
 
 
 
Interest rate swaps
 
$
(2,138
)
 
$
(7,863
)
 
$
(8,976
)
 
$
(16,720
)
 
Interest expense, net of interest capitalized
Foreign currency forward contracts
 
(3,156
)
 
(2,710
)
 
(6,468
)
 
(5,420
)
 
Depreciation and amortization expenses
Foreign currency forward contracts
 
14,601

 
(4,105
)
 
14,643

 
(7,675
)
 
Other income (expense)
Foreign currency collar options
 
—

 
(602
)
 
—

 
(1,204
)
 
Depreciation and amortization expenses
Fuel swaps
 
(133
)
 
2,498

 
192

 
4,775

 
Other income (expense)
Fuel swaps
 
2,043

 
(41,835
)
 
(3,089
)
 
(81,763
)
 
Fuel
 
 
11,217

 
(54,617
)
 
(3,698
)
 
(108,007
)
 
 
Amortization of defined benefit plans:
 
 

 
 
 
 
 
 
 
 
Actuarial loss
 
(372
)
 
(293
)
 
(714
)
 
(557
)
 
Payroll and related
 
 
(372
)
 
(293
)
 
(714
)
 
(557
)
 
 
Total reclassifications for the period
 
$
10,845

 
$
(54,910
)
 
$
(4,412
)
 
$
(108,564
)