XML 46 R33.htm IDEA: XBRL DOCUMENT
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Nature of Operations and Summary of Significant Accounting Policies - Aircraft Fleet (Details) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 item | Dec. 31, 2017 item aircraft
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of daily departures to different destinations | item |  | 2,980
Number of aircraft held by entity |  | 623
Number of seats on aircraft | item | 50 |
CRJ 200 |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft held by entity |  | 208
CRJ 700 |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft held by entity |  | 136
CRJ 900 |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft held by entity |  | 52
ERJ 135 |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft held by entity |  | 3
ERJ 145 |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft held by entity |  | 117
E 175 |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft held by entity |  | 107
Number of seats on aircraft | item |  | 76
E175 SC |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of seats on aircraft | item |  | 70
Number of aircraft ordered |  | 30
EMB 120 |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft removed from service |  | 11
Number of seats on aircraft | item |  | 30
United |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft held by entity |  | 278
Percentage of aggregate capacity operated |  | 46.70%
United | CRJ 200 |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft held by entity |  | 81
United | CRJ 700 |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft held by entity |  | 20
United | ERJ 135 |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft held by entity |  | 3
United | ERJ 145 |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft held by entity |  | 109
United | E 175 |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft held by entity |  | 65
Delta |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft held by entity |  | 225
Percentage of aggregate capacity operated |  | 37.80%
Delta | CRJ 200 |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft held by entity |  | 94
Delta | CRJ 700 |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft held by entity |  | 60
Delta | CRJ 900 |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft held by entity |  | 52
Delta | E 175 |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft held by entity |  | 19
American |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft held by entity |  | 65
Percentage of aggregate capacity operated |  | 10.90%
American | CRJ 200 |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft held by entity |  | 16
American | CRJ 700 |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft held by entity |  | 49
Alaska |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft held by entity |  | 27
Percentage of aggregate capacity operated |  | 4.60%
Alaska | CRJ 200 |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft held by entity |  | 4
Alaska | E 175 |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft held by entity |  | 23
Aircraft in scheduled service |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft held by entity |  | 595
Aircraft in scheduled service | CRJ 200 |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft held by entity |  | 195
Aircraft in scheduled service | CRJ 700 |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft held by entity |  | 129
Aircraft in scheduled service | CRJ 900 |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft held by entity |  | 52
Aircraft in scheduled service | ERJ 135 |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft held by entity |  | 3
Aircraft in scheduled service | ERJ 145 |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft held by entity |  | 109
Aircraft in scheduled service | E 175 |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft held by entity |  | 107
Subleased to an un-affiliated entity |  |
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 200 |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft held by entity |  | 4
Other |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft held by entity |  | 24
Other | CRJ 200 |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft held by entity |  | 9
Other | CRJ 700 |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft held by entity |  | 7
Other | ERJ 145 |  |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |  |
Number of aircraft held by entity |  | 8

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