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Segment Reporting (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 USD ($) segment | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) segment
Segment Reporting |  |  |
Number of operating segments | segment |  |  | 3
Number of reporting segments | segment | 2 |  |
Operating revenues | $ 2,713,491 | $ 2,127,106 | $ 2,971,963
Operating expense | 2,437,624 | 2,018,304 | 2,459,705
Depreciation and amortization expense | 440,198 | 474,959 | 368,098
Special items | 84,592 |  | 21,869
Interest expense | 123,122 | 123,173 | 127,755
Segment profit (loss) | 152,745 | (14,371) | 384,503
Total assets | 7,125,947 | 6,887,622 | 6,657,129
Capital expenditures (including non-cash) | 567,037 | 460,483 | 846,470
SkyWest Airlines [Member] |  |  |
Segment Reporting |  |  |
Operating revenues | 2,192,432 | 1,636,762 | 2,478,681
Operating expense | 2,177,524 | 1,716,808 | 2,214,632
Depreciation and amortization expense | 210,281 | 221,216 | 168,246
Special items | 84,592 |  | 18,508
Interest expense | 13,360 | 12,381 | 13,525
Segment profit (loss) | 1,548 | (92,427) | 250,524
Total assets | 2,957,745 | 2,804,259 | 2,728,964
Capital expenditures (including non-cash) | 128,712 | 124,825 | 270,191
Express Jet Airlines Inc [Member] |  |  |
Segment Reporting |  |  |
Operating revenues |  |  | 24,050
Operating expense |  |  | 28,690
Depreciation and amortization expense |  |  | 971
Special items |  |  | 3,361
Segment profit (loss) |  |  | (4,640)
SkyWest Leasing |  |  |
Segment Reporting |  |  |
Operating revenues | 521,059 | 490,344 | 469,232
Operating expense | 260,100 | 301,496 | 216,383
Depreciation and amortization expense | 229,917 | 253,743 | 198,881
Interest expense | 109,762 | 110,792 | 114,230
Segment profit (loss) | 151,197 | 78,056 | 138,619
Total assets | 4,168,202 | 4,083,363 | 3,928,165
Capital expenditures (including non-cash) | $ 438,325 | $ 335,658 | $ 576,279

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