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Revenue Recognition (Tables) | 3 Months Ended
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Mar. 31, 2021
Revenue Recognition [Abstract] |
Disaggregation of Revenue [Table Text Block] |
| Three Months Ended March 31, |  |
(in thousands) | 2021 |  | 2020 |  |  |  |
Scheduled service | $ | 131,929 |  |  | $ | 197,261 |  |  |  |  |
Ancillary air-related charges | 121,072 |  |  | 176,964 |  |  |  |  |
Co-brand redemptions | 3,694 |  |  | 4,686 |  |  |  |  |
Total passenger revenue | $ | 256,695 |  |  | $ | 378,911 |  |  |  |  |
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] | The following table presents the activity of the co-brand point liability for the periods indicated:
| Three Months Ended March 31,
(in thousands) | 2021 |  | 2020
Balance at January 1 | $ | 21,841 |  |  | $ | 15,613 |
Points awarded (deferral of revenue) | 4,571 |  |  | 6,354 |
Points redeemed (recognition of revenue) | (3,694) |  |  | (4,686) |
Balance at March 31 | $ | 22,718 |  |  | $ | 17,281 |

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045 + Details
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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130545-203045 + Details
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