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Segment Reporting (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 segment | Sep. 30, 2012 | Dec. 31, 2012
Segment Reporting |  |  |  |  |
Operating segments number |  |  | 2 |  |
Number of operating subsidiaries representing operating segments |  |  | 2 |  |
Segment Reporting |  |  |  |  |
Operating revenues | $ 850,740 | $ 865,259 | $ 2,493,357 | $ 2,723,647 |
Operating expense | 794,566 | 810,285 | 2,371,066 | 2,601,410 |
Depreciation and amortization expense | 61,135 | 62,703 | 183,309 | 191,200 |
Interest expense | 16,999 | 19,474 | 52,490 | 58,641 |
Segment profit (loss) | 39,175 | 35,500 | 69,801 | 63,596 |
Identifiable intangible assets, other than goodwill | 15,560 | 17,810 | 15,560 | 17,810 | 17,248
Total assets | 4,265,394 | 4,248,851 | 4,265,394 | 4,248,851 | 4,254,637
Capital expenditures (including non - cash) | 30,868 | 16,180 | 94,581 | 61,074 |
SkyWest |  |  |  |  |
Segment Reporting |  |  |  |  |
Operating revenues | 468,517 | 475,662 | 1,380,930 | 1,479,708 |
Operating expense | 409,320 | 426,511 | 1,236,003 | 1,366,914 |
Depreciation and amortization expense | 38,845 | 38,179 | 116,309 | 115,609 |
Interest expense | 10,812 | 12,292 | 33,535 | 37,207 |
Segment profit (loss) | 48,385 | 36,859 | 111,392 | 75,587 |
Total assets | 2,711,009 | 2,639,895 | 2,711,009 | 2,639,895 |
Capital expenditures (including non - cash) | 21,977 | 11,579 | 66,339 | 47,933 |
ExpressJet |  |  |  |  |
Segment Reporting |  |  |  |  |
Operating revenues | 381,749 | 386,803 | 1,109,085 | 1,235,877 |
Operating expense | 382,583 | 382,511 | 1,128,757 | 1,230,703 |
Depreciation and amortization expense | 22,290 | 24,524 | 67,000 | 75,591 |
Interest expense | 5,274 | 5,953 | 16,099 | 17,958 |
Segment profit (loss) | (6,108) | (1,661) | (35,771) | (12,784) |
Identifiable intangible assets, other than goodwill | 15,560 | 17,810 | 15,560 | 17,810 |
Total assets | 1,554,385 | 1,608,956 | 1,554,385 | 1,608,956 |
Capital expenditures (including non - cash) | 8,891 | 4,601 | 28,242 | 13,141 |
Other |  |  |  |  |
Segment Reporting |  |  |  |  |
Operating revenues | 474 | 2,794 | 3,342 | 8,062 |
Operating expense | 2,663 | 1,263 | 6,306 | 3,793 |
Interest expense | 913 | 1,229 | 2,856 | 3,476 |
Segment profit (loss) | $ (3,102) | $ 302 | $ (5,820) | $ 793 |

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