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Segment Reporting (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 segment | Sep. 30, 2013 | Dec. 31, 2013
Segment Reporting |  |  |  |  |
Operating segments number |  |  | 2 |  |
Number of operating subsidiaries representing operating segments |  |  | 2 |  |
Segment Reporting |  |  |  |  |
Operating revenues | $ 834,633 | $ 850,740 | $ 2,423,592 | $ 2,493,357 |
Operating expense | 775,553 | 794,566 | 2,379,044 | 2,371,066 |
Depreciation and amortization expense | 65,822 | 61,135 | 192,389 | 183,309 |
Interest expense | 16,883 | 16,999 | 48,697 | 52,490 |
Segment profit (loss) | 42,197 | 39,175 | (4,149) | 69,801 |
Identifiable intangible assets, other than goodwill | 13,311 | 15,560 | 13,311 | 15,560 | 14,998
Total assets | 4,397,632 | 4,265,394 | 4,397,632 | 4,265,394 | 4,233,219
Capital expenditures (including non - cash) | 192,830 | 30,868 | 506,364 | 94,581 |
SkyWest Airlines [Member] |  |  |  |  |
Segment Reporting |  |  |  |  |
Operating revenues | 493,606 | 468,517 | 1,416,149 | 1,380,930 |
Operating expense | 430,024 | 409,320 | 1,289,218 | 1,236,003 |
Depreciation and amortization expense | 43,853 | 38,845 | 125,811 | 116,309 |
Interest expense | 11,492 | 10,812 | 32,180 | 33,535 |
Segment profit (loss) | 52,090 | 48,385 | 94,751 | 111,392 |
Total assets | 2,825,243 | 2,711,009 | 2,825,243 | 2,711,009 |
Capital expenditures (including non - cash) | 186,678 | 21,977 | 487,711 | 66,339 |
Express Jet Airlines Inc [Member] |  |  |  |  |
Segment Reporting |  |  |  |  |
Operating revenues | 340,553 | 381,749 | 1,006,021 | 1,109,085 |
Operating expense | 345,606 | 382,583 | 1,089,923 | 1,128,757 |
Depreciation and amortization expense | 21,969 | 22,290 | 66,578 | 67,000 |
Interest expense | 4,692 | 5,274 | 14,309 | 16,099 |
Segment profit (loss) | (9,745) | (6,108) | (98,211) | (35,771) |
Identifiable intangible assets, other than goodwill | 13,311 | 15,560 | 13,311 | 15,560 |
Total assets | 1,572,389 | 1,554,385 | 1,572,389 | 1,554,385 |
Capital expenditures (including non - cash) | 6,152 | 8,891 | 18,653 | 28,242 |
Other Segments [Member] |  |  |  |  |
Segment Reporting |  |  |  |  |
Operating revenues | 474 | 474 | 1,422 | 3,342 |
Operating expense | (77) | 2,663 | (97) | 6,306 |
Interest expense | 699 | 913 | 2,208 | 2,856 |
Segment profit (loss) | $ (148) | $ (3,102) | $ (689) | $ (5,820) |

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