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Segment Reporting (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2012 segment subsidiary | Dec. 31, 2011 segment subsidiary | Dec. 31, 2010
Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Operating segments number |  |  |  |  |  |  |  |  | 2 | 2 |
Number of operating subsidiaries representing operating segments |  |  |  |  |  |  |  |  | 2 | 2 |
Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Operating revenues | $ 810,726 | $ 865,259 | $ 937,214 | $ 921,173 | $ 899,850 | $ 955,425 | $ 933,697 | $ 865,951 | $ 3,534,372 | $ 3,654,923 | $ 2,765,145
Operating expense (income) |  |  |  |  |  |  |  |  | 3,368,385 | 3,613,818 | 2,563,319
Depreciation and amortization expense |  |  |  |  |  |  |  |  | 251,958 | 254,182 | 236,499
Interest expense |  |  |  |  |  |  |  |  | 77,380 | 80,383 | 86,517
Segment profit (loss) |  |  |  |  |  |  |  |  | 88,607 | (39,278) | 115,309
Identifiable intangible assets, other than goodwill | 17,248 |  |  |  | 19,497 |  |  |  | 17,248 | 19,497 | 21,747
Total assets | 4,254,637 |  |  |  | 4,281,908 |  |  |  | 4,254,637 | 4,281,908 | 4,446,509
Capital expenditures (including non - cash) |  |  |  |  |  |  |  |  | 73,860 | 199,756 | 181,077
SkyWest |  |  |  |  |  |  |  |  |  |  |
Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  |  |  |  |  |  |  |  | 1,930,149 | 2,002,830 | 1,904,472
Operating expense (income) |  |  |  |  |  |  |  |  | 1,774,876 | 1,893,909 | 1,759,784
Depreciation and amortization expense |  |  |  |  |  |  |  |  | 153,915 | 147,520 | 144,002
Interest expense |  |  |  |  |  |  |  |  | 49,208 | 50,907 | 53,622
Segment profit (loss) |  |  |  |  |  |  |  |  | 106,065 | 58,014 | 91,066
Total assets | 2,633,369 |  |  |  | 2,595,901 |  |  |  | 2,633,369 | 2,595,901 | 2,587,371
Capital expenditures (including non - cash) |  |  |  |  |  |  |  |  | 53,656 | 166,998 | 158,787
ExpressJet |  |  |  |  |  |  |  |  |  |  |
Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  |  |  |  |  |  |  |  | 1,593,527 | 1,640,837 | 855,095
Operating expense (income) |  |  |  |  |  |  |  |  | 1,588,400 | 1,714,481 | 804,110
Depreciation and amortization expense |  |  |  |  |  |  |  |  | 98,043 | 106,662 | 92,497
Interest expense |  |  |  |  |  |  |  |  | 23,582 | 25,142 | 27,933
Segment profit (loss) |  |  |  |  |  |  |  |  | (18,455) | (98,786) | 23,052
Identifiable intangible assets, other than goodwill | 17,248 |  |  |  | 19,497 |  |  |  | 17,248 | 19,497 | 21,747
Total assets | 1,621,268 |  |  |  | 1,686,007 |  |  |  | 1,621,268 | 1,686,007 | 1,859,138
Capital expenditures (including non - cash) |  |  |  |  |  |  |  |  | 20,204 | 32,758 | 22,290
Other |  |  |  |  |  |  |  |  |  |  |
Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  |  |  |  |  |  |  |  | 10,696 | 11,256 | 5,578
Operating expense (income) |  |  |  |  |  |  |  |  | 5,109 | 5,428 | (575)
Interest expense |  |  |  |  |  |  |  |  | 4,590 | 4,334 | 4,962
Segment profit (loss) |  |  |  |  |  |  |  |  | $ 997 | $ 1,494 | $ 1,191

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- Definition Total expenditures for additions to long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets of the reportable segment; if the amount: (a) is included in the determination of segment assets reviewed by the chief operating decision maker or (b) is otherwise regularly provided to the chief operating decision maker, even if not included in the determination of segment assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 28 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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