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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, 2019 aircraft
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of daily departures | 2,300
Number of aircraft held by entity | 544
CRJ 200 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 214
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 | 126
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 | 156
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 | 199
Percentage of aggregate capacity operated | 41.20%
Delta | CRJ 200 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 84
Delta | CRJ 700 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 13
Delta | CRJ 900 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 43
Delta | E175 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 59
United |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 183
Percentage of aggregate capacity operated | 37.90%
United | CRJ 200 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 99
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 | 65
American |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 69
Percentage of aggregate capacity operated | 14.30%
American | CRJ 200 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 7
American | CRJ 700 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 62
Alaska |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 32
Percentage of aggregate capacity operated | 6.60%
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 | 483
Aircraft in scheduled service | CRJ 200 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 190
Aircraft in scheduled service | CRJ 700 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 94
Aircraft in scheduled service | CRJ 900 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 43
Aircraft in scheduled service | E175 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 156
Subleased to an un-affiliated entity |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 19
Subleased to an un-affiliated entity | CRJ 200 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 4
Subleased to an un-affiliated entity | CRJ 700 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 10
Subleased to an un-affiliated entity | 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 | 42
Other | CRJ 200 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 20
Other | CRJ 700 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 22

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