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Revenue Recognition (Tables) | 12 Months Ended
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Dec. 31, 2020
Revenue from Contract with Customer [Abstract] |
Disaggregation of Revenue | Passenger revenue is the most significant category in our reported operating revenues, as outlined below:
| Year Ended December 31,
(in thousands) | 2020 |  | 2019 |  | 2018
Scheduled service | $ | 435,668 |  |  | $ | 897,631 |  |  | $ | 898,653 |
Ancillary air-related charges | 453,545 |  |  | 770,206 |  |  | 621,939 |
Co-brand redemptions | 12,974 |  |  | 15,118 |  |  | 13,109 |
Total passenger revenue | $ | 902,187 |  |  | $ | 1,682,955 |  |  | $ | 1,533,701 |
Contract with Customer, Asset and Liability | The following table presents the activity of the co-brand point liability as of the dates indicated:
| Year Ended December 31,
(in thousands) | 2020 |  | 2019
Balance at January 1 | $ | 15,613 |  |  | $ | 10,708 |
Points awarded | 19,202 |  |  | 20,023 |
Points redeemed | (12,974) |  |  | (15,118) |
Balance at December 31 | $ | 21,841 |  |  | $ | 15,613 |

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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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