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Nature of Operations and Summary of Significant Accounting Policies - Aircraft Fleet (Details) | 12 Months Ended
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Dec. 31, 2020 aircraft
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of daily departures | 1,770
Number of aircraft held by entity | 601
CRJ 200 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 206
Number of seats on aircraft | 50
CRJ 700 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 154
CRJ 700 | Minimum |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of seats on aircraft | 65
CRJ 700 | Maximum |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of seats on aircraft | 76
CRJ 900 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 48
CRJ 900 | Minimum |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of seats on aircraft | 65
CRJ 900 | Maximum |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of seats on aircraft | 76
E175 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 193
E175 | Minimum |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of seats on aircraft | 65
E175 | Maximum |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of seats on aircraft | 76
Delta |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 142
Percentage of aggregate capacity operated | 47.10%
Delta | CRJ 200 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 26
Delta | CRJ 700 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 6
Delta | CRJ 900 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 39
Delta | E175 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 71
United |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 213
Percentage of aggregate capacity operated | 31.40%
United | CRJ 200 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 104
United | CRJ 700 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 19
United | E175 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 90
American |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 65
Percentage of aggregate capacity operated | 14.40%
American | CRJ 700 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 65
Alaska |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 32
Percentage of aggregate capacity operated | 7.10%
Alaska | E175 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 32
Aircraft in scheduled service |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 452
Aircraft in scheduled service | CRJ 200 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 130
Aircraft in scheduled service | CRJ 700 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 90
Aircraft in scheduled service | CRJ 900 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 39
Aircraft in scheduled service | E175 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 193
Leased to third parties |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 41
Leased to third parties | CRJ 200 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 2
Leased to third parties | CRJ 700 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 34
Leased to third parties | CRJ 900 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 5
Other |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 108
Other | CRJ 200 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 74
Other | CRJ 700 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 30
Other | CRJ 900 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 4

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