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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, 2021 aircraft
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of daily departures | 2,080
Number of aircraft held by entity | 629
E175 [Member] |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 211
E175 [Member] | Minimum [Member] |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of seats on aircraft | 65
E175 [Member] | Maximum [Member] |
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 | 49
CRJ 900 | Minimum [Member] |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of seats on aircraft | 65
CRJ 900 | Maximum [Member] |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of seats on aircraft | 76
CRJ 700 [Member] |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 166
CRJ 700 [Member] | Minimum [Member] |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of seats on aircraft | 65
CRJ 700 [Member] | Maximum [Member] |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of seats on aircraft | 76
CRJ 200 [Member] |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 203
Number of seats on aircraft | 50
United |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 220
Percentage of aggregate capacity operated | 43.20%
United | E175 [Member] |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 90
United | CRJ 700 [Member] |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 19
United | CRJ 200 [Member] |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 111
Delta |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 149
Percentage of aggregate capacity operated | 29.30%
Delta | E175 [Member] |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 71
Delta | CRJ 900 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 44
Delta | CRJ 700 [Member] |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 5
Delta | CRJ 200 [Member] |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 29
American |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 108
Percentage of aggregate capacity operated | 21.20%
American | E175 [Member] |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 18
American | CRJ 700 [Member] |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 90
Alaska |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 32
Percentage of aggregate capacity operated | 6.30%
Alaska | E175 [Member] |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 32
Aircraft in schedule service or under contract |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 509
Aircraft in schedule service or under contract | E175 [Member] |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 211
Aircraft in schedule service or under contract | CRJ 900 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 44
Aircraft in schedule service or under contract | CRJ 700 [Member] |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 114
Aircraft in schedule service or under contract | CRJ 200 [Member] |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 140
Leased to third parties |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 39
Leased to third parties | CRJ 900 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 5
Leased to third parties | CRJ 700 [Member] |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 34
Other |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 81
Other | CRJ 700 [Member] |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 18
Other | CRJ 200 [Member] |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 63

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