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Other Comprehensive Income (Loss) (Tables) | 9 Months Ended
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Sep. 30, 2019
Other Comprehensive Income (Loss) [Abstract] |
Components of Other Comprehensive Income (Loss) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Three Months Ended September 30, 2019
​ | ​ | Gross |  | Tax Effect |  | Net of Tax
Interest rate swap amounts reclassified into interest expense | ​ | $ | (1,974) | ​ | $ | 523 | ​ | $ | (1,451)
Changes in fair value of interest rate swaps | ​ |  | (15,482) | ​ |  | 4,103 | ​ |  | (11,379)
Foreign currency translation adjustment | ​ |  | (24,911) | ​ |  | — | ​ |  | (24,911)
​ | ​ | $ | (42,367) | ​ | $ | 4,626 | ​ | $ | (37,741)
​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Three Months Ended September 30, 2018
​ | ​ | Gross |  | Tax Effect |  | Net of Tax
Interest rate swap amounts reclassified into interest expense | ​ | $ | 4,279 | ​ | $ | (1,134) | ​ | $ | 3,145
Fuel hedge amounts reclassified into cost of operations | ​ |  | (1,810) | ​ |  | 451 | ​ |  | (1,359)
Changes in fair value of interest rate swaps | ​ |  | 863 | ​ |  | (229) | ​ |  | 634
Changes in fair value of fuel hedges | ​ |  | 295 | ​ |  | (73) | ​ |  | 222
Foreign currency translation adjustment | ​ |  | 35,455 | ​ |  | — | ​ |  | 35,455
​ | ​ | $ | 39,082 | ​ | $ | (985) | ​ | $ | 38,097
​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Nine Months Ended September 30, 2019
​ |  | Gross |  | Tax Effect |  | Net of Tax
Interest rate swap amounts reclassified into interest expense | ​ | $ | (6,918) | ​ | $ | 1,833 | ​ | $ | (5,085)
Changes in fair value of interest rate swaps | ​ |  | (56,818) | ​ |  | 15,057 | ​ |  | (41,761)
Foreign currency translation adjustment | ​ |  | 60,404 | ​ |  | — | ​ |  | 60,404
​ | ​ | $ | (3,332) | ​ | $ | 16,890 | ​ | $ | 13,558
​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Nine Months Ended September 30, 2018
​ |  | Gross |  | Tax Effect |  | Net of Tax
Interest rate swap amounts reclassified into interest expense | ​ | $ | 2,407 | ​ | $ | (638) | ​ | $ | 1,769
Fuel hedge amounts reclassified into cost of operations | ​ |  | (4,647) | ​ |  | 1,157 | ​ |  | (3,490)
Changes in fair value of interest rate swaps | ​ |  | 15,828 | ​ |  | (4,194) | ​ |  | 11,634
Changes in fair value of fuel hedges | ​ |  | 2,956 | ​ |  | (730) | ​ |  | 2,226
Foreign currency translation adjustment | ​ |  | (67,349) | ​ |  | — | ​ |  | (67,349)
​ | ​ | $ | (50,805) | ​ | $ | (4,405) | ​ | $ | (55,210)
Amounts Included in Accumulated Other Comprehensive Income (Loss) | A rollforward of the amounts included in AOCIL, net of taxes, for the nine months ended September 30, 2019 and 2018, is as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ | ​ |  | ​ | ​ |  | Foreign |  | Accumulated
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Currency | ​ | Other
​ | ​ | ​ | ​ | ​ | Interest | ​ | Translation | ​ | Comprehensive
​ | ​ | ​ | ​ | Rate Swaps | ​ | Adjustment | ​ | Income (Loss)
Balance at December 31, 2018 | ​ | ​ | ​ | ​ | $ | 8,892 | ​ | $ | (83,678) | ​ | $ | (74,786)
Amounts reclassified into earnings | ​ | ​ | ​ | ​ | ​ | (5,085) | ​ | ​ | — | ​ | ​ | (5,085)
Changes in fair value | ​ | ​ | ​ | ​ | ​ | (41,761) | ​ | ​ | — | ​ | ​ | (41,761)
Foreign currency translation adjustment | ​ | ​ | ​ | ​ | ​ | — | ​ | ​ | 60,404 | ​ | ​ | 60,404
Balance at September 30, 2019 | ​ | ​ | ​ | ​ | $ | (37,954) | ​ | $ | (23,274) | ​ | $ | (61,228)
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ | ​ |  | ​ | ​ |  | Foreign |  | Accumulated
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Currency | ​ | Other
​ | ​ | ​ | ​ | ​ | Interest | ​ | Translation | ​ | Comprehensive
​ | ​ | Fuel Hedges | ​ | Rate Swaps | ​ | Adjustment | ​ | Income (Loss)
Balance at December 31, 2017 | ​ | $ | 2,907 | ​ | $ | 13,951 | ​ | $ | 91,555 | ​ | $ | 108,413
Amounts reclassified into earnings | ​ |  | (3,490) | ​ |  | 1,769 | ​ |  | — | ​ |  | (1,721)
Changes in fair value | ​ |  | 2,226 | ​ |  | 11,634 | ​ |  | — | ​ |  | 13,860
Foreign currency translation adjustment | ​ |  | — | ​ |  | — | ​ |  | (67,349) | ​ |  | (67,349)
Balance at September 30, 2018 | ​ | $ | 1,643 | ​ | $ | 27,354 | ​ | $ | 24,206 | ​ | $ | 53,203

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- Definition Tabular disclosure of components of comprehensive income (loss). Includes, but is not limited to, foreign currency translation adjustments, foreign currency transactions designated as economic hedges of a net investment in foreign entity, gain (loss) and prior service cost (credit) for pension plans and other postretirement benefit plans. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118930883&loc=d3e526-108580 + Details
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