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Changes in Accumulated Other Comprehensive (Loss) Income (Tables)
 6 Months Ended
Jun. 30, 2017
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]  
Schedule of changes in accumulated other comprehensive income (loss) by component
The following table presents the changes in accumulated other comprehensive income (loss) by component for the six months ended June 30, 2017 and 2016 (in thousands):
 
Accumulated Other Comprehensive Income (Loss) for the Six Months Ended June 30, 2017
 
Accumulated Other Comprehensive Income (Loss) for the Six Months Ended June 30, 2016
 
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
$
(820,850
)
 
$
(28,083
)
 
$
(67,551
)
 
$
(916,484
)
 
$
(1,232,073
)
 
$
(26,447
)
 
$
(69,913
)
 
$
(1,328,433
)
Other comprehensive income (loss) before reclassifications
43,408

 
(4,847
)
 
8,321

 
46,882

 
(24,062
)
 
(8,184
)
 
4,380

 
(27,866
)
Amounts reclassified from accumulated other comprehensive loss
108,007

 
557

 
—

 
108,564

 
183,150

 
1,087

 
—

 
184,237

Net current-period other comprehensive income (loss)
151,415

 
(4,290
)
 
8,321

 
155,446

 
159,088

 
(7,097
)
 
4,380

 
156,371

Ending balance
$
(669,435
)
 
$
(32,373
)
 
$
(59,230
)
 
$
(761,038
)
 
$
(1,072,985
)
 
$
(33,544
)
 
$
(65,533
)
 
$
(1,172,062
)
Schedule of reclassifications out of accumulated other comprehensive income (loss)
The following table presents reclassifications out of accumulated other comprehensive income (loss) for the quarters and six months ended June 30, 2017 and 2016 (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, 2017
 
Quarter Ended June 30, 2016
 
Six Months Ended June 30, 2017
 
Six Months Ended June 30, 2016
 
Affected Line Item in  Statements of
Comprehensive Income (Loss)
Loss on cash flow derivative hedges:
 
 

 
 
 
 

 
 
 
 
Interest rate swaps
 
$
(7,863
)
 
$
(10,938
)
 
$
(16,720
)
 
$
(20,066
)
 
Interest expense, net of interest capitalized
Foreign currency forward contracts
 
(2,710
)
 
(1,980
)
 
(5,420
)
 
(2,698
)
 
Depreciation and amortization expenses
Foreign currency forward contracts
 
(4,105
)
 
(12,830
)
 
(7,675
)
 
(6,742
)
 
Other expense
Foreign currency forward contracts
 
—

 
(207
)
 
—

 
(207
)
 
Other operating
Foreign currency collar options
 
(602
)
 
(601
)
 
(1,204
)
 
(1,204
)
 
Depreciation and amortization expenses
Fuel swaps
 
2,498

 
13,933

 
4,775

 
6,597

 
Other expense
Fuel swaps
 
(41,835
)
 
(68,129
)
 
(81,763
)
 
(158,830
)
 
Fuel
 
 
(54,617
)
 
(80,752
)
 
(108,007
)
 
(183,150
)
 
 
Amortization of defined benefit plans:
 
 

 
 
 
 
 
 
 
 
Actuarial loss
 
(293
)
 
(285
)
 
(557
)
 
(1,087
)
 
Payroll and related
 
 
(293
)
 
(285
)
 
(557
)
 
(1,087
)
 
 
Total reclassifications for the period
 
$
(54,910
)
 
$
(81,037
)
 
$
(108,564
)
 
$
(184,237
)