XML 26 R37.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Nature of Operations and Summary of Significant Accounting Policies (Details 5) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 segment subsidiary | Dec. 31, 2013 | Dec. 31, 2012
Other Revenue Items |  |  |  |  |  |  |  |  |  |  |
Deemed rental income under code-share agreement |  |  |  |  |  |  |  |  | $ 497,000,000 skyw_DeemedRentalIncomeUnderCodeShareAgreements | $ 500,200,000 skyw_DeemedRentalIncomeUnderCodeShareAgreements | $ 506,700,000 skyw_DeemedRentalIncomeUnderCodeShareAgreements
Net Income (loss) Per Common Share |  |  |  |  |  |  |  |  |  |  |
Number of outstanding options not included in computation of Diluted EPS (in shares) |  |  |  |  |  |  |  |  | 3,191,000 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount | 3,072,000 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount | 3,889,000 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Numerator |  |  |  |  |  |  |  |  |  |  |
Net Income (loss) | (27,868,000)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 41,338,000 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | (14,737,000)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | (22,887,000)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 8,609,000 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 26,394,000 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 20,720,000 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 3,233,000 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | (24,154,000)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 58,956,000 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 51,157,000 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
Denominator |  |  |  |  |  |  |  |  |  |  |
Denominator for basic earnings per-share weighted average shares | 51,174,000 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 51,127,000 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 51,183,000 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 51,467,000 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 51,228,000 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 51,881,000 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 51,881,000 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 51,763,000 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 51,237,000 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 51,688,000 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 51,090,000 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Dilution due to stock options and restricted stock (in shares) |  |  |  |  |  |  |  |  |  | 734,000 us-gaap_WeightedAverageNumberOfSharesRestrictedStock | 656,000 us-gaap_WeightedAverageNumberOfSharesRestrictedStock
Weighted average number of shares for diluted net income per common share | 51,174,000 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 52,036,000 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 51,183,000 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 51,467,000 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 52,034,000 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 52,610,000 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 52,547,000 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 52,497,000 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 51,237,000 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 52,422,000 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 51,746,000 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Basic earnings (loss) per share (in dollars per share) | $ (0.54)us-gaap_EarningsPerShareBasic | $ 0.81 us-gaap_EarningsPerShareBasic | $ (0.29)us-gaap_EarningsPerShareBasic | $ (0.44)us-gaap_EarningsPerShareBasic | $ 0.17 us-gaap_EarningsPerShareBasic | $ 0.51 us-gaap_EarningsPerShareBasic | $ 0.40 us-gaap_EarningsPerShareBasic | $ 0.06 us-gaap_EarningsPerShareBasic | $ (0.47)us-gaap_EarningsPerShareBasic | $ 1.14 us-gaap_EarningsPerShareBasic | $ 1.00 us-gaap_EarningsPerShareBasic
Diluted earnings (loss) per share (in dollars per share) | $ (0.54)us-gaap_EarningsPerShareDiluted | $ 0.79 us-gaap_EarningsPerShareDiluted | $ (0.29)us-gaap_EarningsPerShareDiluted | $ (0.44)us-gaap_EarningsPerShareDiluted | $ 0.17 us-gaap_EarningsPerShareDiluted | $ 0.50 us-gaap_EarningsPerShareDiluted | $ 0.39 us-gaap_EarningsPerShareDiluted | $ 0.06 us-gaap_EarningsPerShareDiluted | $ (0.47)us-gaap_EarningsPerShareDiluted | $ 1.12 us-gaap_EarningsPerShareDiluted | $ 0.99 us-gaap_EarningsPerShareDiluted
COMPREHENSIVE INCOME (LOSS): |  |  |  |  |  |  |  |  |  |  |
Net Income (loss) | (27,868,000)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 41,338,000 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | (14,737,000)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | (22,887,000)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 8,609,000 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 26,394,000 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 20,720,000 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 3,233,000 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | (24,154,000)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 58,956,000 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 51,157,000 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
Proportionate share of other companies foreign currency translation adjustment, net of tax |  |  |  |  |  |  |  |  | (1,129,000)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent | 66,000 us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent | (251,000)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent
Unrealized appreciation (depreciation) on marketable securities, net of tax |  |  |  |  |  |  |  |  | (719,000)us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent | (13,000)us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent | 316,000 us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent
TOTAL COMPREHENSIVE INCOME (LOSS) |  |  |  |  |  |  |  |  | (26,002,000)us-gaap_ComprehensiveIncomeNetOfTax | 59,009,000 us-gaap_ComprehensiveIncomeNetOfTax | 51,222,000 us-gaap_ComprehensiveIncomeNetOfTax
Fair Value of Financial Instruments |  |  |  |  |  |  |  |  |  |  |
Fair value of long-term debt | 1,813,100,000 us-gaap_LongTermDebtFairValue |  |  |  | 1,509,000,000 us-gaap_LongTermDebtFairValue |  |  |  | 1,813,100,000 us-gaap_LongTermDebtFairValue | 1,509,000,000 us-gaap_LongTermDebtFairValue |
Carrying amount of long-term debt | $ 1,745,811,000 us-gaap_LongTermDebt |  |  |  | $ 1,470,568,000 us-gaap_LongTermDebt |  |  |  | $ 1,745,811,000 us-gaap_LongTermDebt | $ 1,470,568,000 us-gaap_LongTermDebt |
Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Operating segments number |  |  |  |  |  |  |  |  | 2 us-gaap_NumberOfOperatingSegments |  |
Number of operating subsidiaries representing operating segments |  |  |  |  |  |  |  |  | 2 skyw_NumberOfSubsidiariesRepresentingOperatingSegments |  |
Delta Connection Agreements | ExpressJet |  |  |  |  |  |  |  |  |  |  |
Agreements with other airlines |  |  |  |  |  |  |  |  |  |  |
Term of agreement |  |  |  |  |  |  |  |  | 4 years 1 month 6 days |  |
Delta Connection Agreements | Sky West Airlines Inc |  |  |  |  |  |  |  |  |  |  |
Agreements with other airlines |  |  |  |  |  |  |  |  |  |  |
Term of agreement |  |  |  |  |  |  |  |  | 4 years 9 months 18 days |  |
Delta Connection Agreements | CRJ 200 | ExpressJet |  |  |  |  |  |  |  |  |  |  |
Agreements with other airlines |  |  |  |  |  |  |  |  |  |  |
Number of aircraft under contract |  |  |  |  |  |  |  |  | 59 us-gaap_NumberOfAircraftOperated / us-gaap_AircraftTypeAxis = skyw_CRJ200Member / dei_LegalEntityAxis = skyw_ExpressJetMember / us-gaap_TypeOfArrangementAxis = skyw_DeltaConnectionAgreementsMember |  |
Delta Connection Agreements | CRJ 200 | Sky West Airlines Inc |  |  |  |  |  |  |  |  |  |  |
Agreements with other airlines |  |  |  |  |  |  |  |  |  |  |
Number of aircraft under contract |  |  |  |  |  |  |  |  | 44 us-gaap_NumberOfAircraftOperated / us-gaap_AircraftTypeAxis = skyw_CRJ200Member / dei_LegalEntityAxis = skyw_SkyWestAirlinesIncMember / us-gaap_TypeOfArrangementAxis = skyw_DeltaConnectionAgreementsMember |  |
Delta Connection Agreements | CRJ 700 | ExpressJet |  |  |  |  |  |  |  |  |  |  |
Agreements with other airlines |  |  |  |  |  |  |  |  |  |  |
Number of aircraft under contract |  |  |  |  |  |  |  |  | 41 us-gaap_NumberOfAircraftOperated / us-gaap_AircraftTypeAxis = skyw_CRJ700Member / dei_LegalEntityAxis = skyw_ExpressJetMember / us-gaap_TypeOfArrangementAxis = skyw_DeltaConnectionAgreementsMember |  |
Delta Connection Agreements | CRJ 700 | Sky West Airlines Inc |  |  |  |  |  |  |  |  |  |  |
Agreements with other airlines |  |  |  |  |  |  |  |  |  |  |
Number of aircraft under contract |  |  |  |  |  |  |  |  | 19 us-gaap_NumberOfAircraftOperated / us-gaap_AircraftTypeAxis = skyw_CRJ700Member / dei_LegalEntityAxis = skyw_SkyWestAirlinesIncMember / us-gaap_TypeOfArrangementAxis = skyw_DeltaConnectionAgreementsMember |  |
Delta Connection Agreements | CRJ 900 | ExpressJet |  |  |  |  |  |  |  |  |  |  |
Agreements with other airlines |  |  |  |  |  |  |  |  |  |  |
Number of aircraft under contract |  |  |  |  |  |  |  |  | 28 us-gaap_NumberOfAircraftOperated / us-gaap_AircraftTypeAxis = skyw_CRJ900Member / dei_LegalEntityAxis = skyw_ExpressJetMember / us-gaap_TypeOfArrangementAxis = skyw_DeltaConnectionAgreementsMember |  |
Delta Connection Agreements | CRJ 900 | Sky West Airlines Inc |  |  |  |  |  |  |  |  |  |  |
Agreements with other airlines |  |  |  |  |  |  |  |  |  |  |
Number of aircraft under contract |  |  |  |  |  |  |  |  | 32 us-gaap_NumberOfAircraftOperated / us-gaap_AircraftTypeAxis = skyw_CRJ900Member / dei_LegalEntityAxis = skyw_SkyWestAirlinesIncMember / us-gaap_TypeOfArrangementAxis = skyw_DeltaConnectionAgreementsMember |  |
United Express Agreements | ExpressJet |  |  |  |  |  |  |  |  |  |  |
Agreements with other airlines |  |  |  |  |  |  |  |  |  |  |
Term of agreement |  |  |  |  |  |  |  |  | 1 year 10 months 24 days |  |
United Express Agreements | Sky West Airlines Inc |  |  |  |  |  |  |  |  |  |  |
Agreements with other airlines |  |  |  |  |  |  |  |  |  |  |
Term of agreement |  |  |  |  |  |  |  |  | 3 years 4 months 24 days |  |
United Express Agreements | CRJ 200 | ExpressJet |  |  |  |  |  |  |  |  |  |  |
Agreements with other airlines |  |  |  |  |  |  |  |  |  |  |
Number of aircraft under contract |  |  |  |  |  |  |  |  | 7 us-gaap_NumberOfAircraftOperated / us-gaap_AircraftTypeAxis = skyw_CRJ200Member / dei_LegalEntityAxis = skyw_ExpressJetMember / us-gaap_TypeOfArrangementAxis = skyw_UnitedExpressAgreementsMember |  |
United Express Agreements | CRJ 200 | Sky West Airlines Inc |  |  |  |  |  |  |  |  |  |  |
Agreements with other airlines |  |  |  |  |  |  |  |  |  |  |
Number of aircraft under contract |  |  |  |  |  |  |  |  | 61 us-gaap_NumberOfAircraftOperated / us-gaap_AircraftTypeAxis = skyw_CRJ200Member / dei_LegalEntityAxis = skyw_SkyWestAirlinesIncMember / us-gaap_TypeOfArrangementAxis = skyw_UnitedExpressAgreementsMember |  |
United Express Agreements | CRJ 700 | Sky West Airlines Inc |  |  |  |  |  |  |  |  |  |  |
Agreements with other airlines |  |  |  |  |  |  |  |  |  |  |
Number of aircraft under contract |  |  |  |  |  |  |  |  | 70 us-gaap_NumberOfAircraftOperated / us-gaap_AircraftTypeAxis = skyw_CRJ700Member / dei_LegalEntityAxis = skyw_SkyWestAirlinesIncMember / us-gaap_TypeOfArrangementAxis = skyw_UnitedExpressAgreementsMember |  |
United Express Agreements | E175 | Sky West Airlines Inc |  |  |  |  |  |  |  |  |  |  |
Agreements with other airlines |  |  |  |  |  |  |  |  |  |  |
Number of aircraft under contract |  |  |  |  |  |  |  |  | 20 us-gaap_NumberOfAircraftOperated / us-gaap_AircraftTypeAxis = skyw_E175Member / dei_LegalEntityAxis = skyw_SkyWestAirlinesIncMember / us-gaap_TypeOfArrangementAxis = skyw_UnitedExpressAgreementsMember |  |
United Express Agreements | EMB 120 | Sky West Airlines Inc |  |  |  |  |  |  |  |  |  |  |
Agreements with other airlines |  |  |  |  |  |  |  |  |  |  |
Number of aircraft under contract |  |  |  |  |  |  |  |  | 9 us-gaap_NumberOfAircraftOperated / us-gaap_AircraftTypeAxis = skyw_EMB120Member / dei_LegalEntityAxis = skyw_SkyWestAirlinesIncMember / us-gaap_TypeOfArrangementAxis = skyw_UnitedExpressAgreementsMember |  |
United Express Agreements | EMB 145 | ExpressJet |  |  |  |  |  |  |  |  |  |  |
Agreements with other airlines |  |  |  |  |  |  |  |  |  |  |
Number of aircraft under contract |  |  |  |  |  |  |  |  | 216 us-gaap_NumberOfAircraftOperated / us-gaap_AircraftTypeAxis = skyw_EMB145Member / dei_LegalEntityAxis = skyw_ExpressJetMember / us-gaap_TypeOfArrangementAxis = skyw_UnitedExpressAgreementsMember |  |
United Express Agreements | EMB 135 | ExpressJet |  |  |  |  |  |  |  |  |  |  |
Agreements with other airlines |  |  |  |  |  |  |  |  |  |  |
Number of aircraft under contract |  |  |  |  |  |  |  |  | 9 us-gaap_NumberOfAircraftOperated / us-gaap_AircraftTypeAxis = skyw_EMB135Member / dei_LegalEntityAxis = skyw_ExpressJetMember / us-gaap_TypeOfArrangementAxis = skyw_UnitedExpressAgreementsMember |  |
United Express Agreement | Sky West Airlines Inc |  |  |  |  |  |  |  |  |  |  |
Agreements with other airlines |  |  |  |  |  |  |  |  |  |  |
Notice period for termination of agreement |  |  |  |  |  |  |  |  | 120 days |  |
United Express Agreement | CRJ 200 | Sky West Airlines Inc |  |  |  |  |  |  |  |  |  |  |
Agreements with other airlines |  |  |  |  |  |  |  |  |  |  |
Number of aircraft under contract |  |  |  |  |  |  |  |  | 21 us-gaap_NumberOfAircraftOperated / us-gaap_AircraftTypeAxis = skyw_CRJ200Member / dei_LegalEntityAxis = skyw_SkyWestAirlinesIncMember / us-gaap_TypeOfArrangementAxis = skyw_UnitedExpressProrateAgreementMember |  |
United Express Agreement | EMB 120 | Sky West Airlines Inc |  |  |  |  |  |  |  |  |  |  |
Agreements with other airlines |  |  |  |  |  |  |  |  |  |  |
Number of aircraft under contract |  |  |  |  |  |  |  |  | 12 us-gaap_NumberOfAircraftOperated / us-gaap_AircraftTypeAxis = skyw_EMB120Member / dei_LegalEntityAxis = skyw_SkyWestAirlinesIncMember / us-gaap_TypeOfArrangementAxis = skyw_UnitedExpressProrateAgreementMember |  |
Alaska Capacity Purchase Agreement | CRJ 700 | Sky West Airlines Inc |  |  |  |  |  |  |  |  |  |  |
Agreements with other airlines |  |  |  |  |  |  |  |  |  |  |
Number of aircraft under contract |  |  |  |  |  |  |  |  | 9 us-gaap_NumberOfAircraftOperated / us-gaap_AircraftTypeAxis = skyw_CRJ700Member / dei_LegalEntityAxis = skyw_SkyWestAirlinesIncMember / us-gaap_TypeOfArrangementAxis = skyw_AlaskaCapacityPurchaseAgreementMember |  |
US Airways Express Agreement | CRJ 200 | Sky West Airlines Inc |  |  |  |  |  |  |  |  |  |  |
Agreements with other airlines |  |  |  |  |  |  |  |  |  |  |
Number of aircraft under contract |  |  |  |  |  |  |  |  | 10 us-gaap_NumberOfAircraftOperated / us-gaap_AircraftTypeAxis = skyw_CRJ200Member / dei_LegalEntityAxis = skyw_SkyWestAirlinesIncMember / us-gaap_TypeOfArrangementAxis = skyw_USAirwaysExpressAgreementMember |  |
US Airways Express Agreement | CRJ 900 | Sky West Airlines Inc |  |  |  |  |  |  |  |  |  |  |
Agreements with other airlines |  |  |  |  |  |  |  |  |  |  |
Number of aircraft under contract |  |  |  |  |  |  |  |  | 4 us-gaap_NumberOfAircraftOperated / us-gaap_AircraftTypeAxis = skyw_CRJ900Member / dei_LegalEntityAxis = skyw_SkyWestAirlinesIncMember / us-gaap_TypeOfArrangementAxis = skyw_USAirwaysExpressAgreementMember |  |
American Capacity Purchase Agreement | CRJ 200 | ExpressJet |  |  |  |  |  |  |  |  |  |  |
Agreements with other airlines |  |  |  |  |  |  |  |  |  |  |
Number of aircraft under contract |  |  |  |  |  |  |  |  | 11 us-gaap_NumberOfAircraftOperated / us-gaap_AircraftTypeAxis = skyw_CRJ200Member / dei_LegalEntityAxis = skyw_ExpressJetMember / us-gaap_TypeOfArrangementAxis = skyw_AmericanCapacityPurchaseAgreementMember |  |
American Capacity Purchase Agreement | CRJ 200 | Sky West Airlines Inc |  |  |  |  |  |  |  |  |  |  |
Agreements with other airlines |  |  |  |  |  |  |  |  |  |  |
Number of aircraft under contract |  |  |  |  |  |  |  |  | 12 us-gaap_NumberOfAircraftOperated / us-gaap_AircraftTypeAxis = skyw_CRJ200Member / dei_LegalEntityAxis = skyw_SkyWestAirlinesIncMember / us-gaap_TypeOfArrangementAxis = skyw_AmericanCapacityPurchaseAgreementMember |  |
American Capacity Prorate Agreement | Sky West Airlines Inc |  |  |  |  |  |  |  |  |  |  |
Agreements with other airlines |  |  |  |  |  |  |  |  |  |  |
Notice period for termination of agreement |  |  |  |  |  |  |  |  | 120 days |  |
American Capacity Prorate Agreement | CRJ 200 | Sky West Airlines Inc |  |  |  |  |  |  |  |  |  |  |
Agreements with other airlines |  |  |  |  |  |  |  |  |  |  |
Number of aircraft under contract |  |  |  |  |  |  |  |  | 4 us-gaap_NumberOfAircraftOperated / us-gaap_AircraftTypeAxis = skyw_CRJ200Member / dei_LegalEntityAxis = skyw_SkyWestAirlinesIncMember / us-gaap_TypeOfArrangementAxis = skyw_AmericanCapacityProrateAgreementMember |  |
US Airways Express Prorate Agreement [Member] | Sky West Airlines Inc |  |  |  |  |  |  |  |  |  |  |
Agreements with other airlines |  |  |  |  |  |  |  |  |  |  |
Notice period for termination of agreement |  |  |  |  |  |  |  |  | 120 days |  |
US Airways Express Prorate Agreement [Member] | CRJ 200 | Sky West Airlines Inc |  |  |  |  |  |  |  |  |  |  |
Agreements with other airlines |  |  |  |  |  |  |  |  |  |  |
Number of aircraft under contract |  |  |  |  |  |  |  |  | 1 us-gaap_NumberOfAircraftOperated / us-gaap_AircraftTypeAxis = skyw_CRJ200Member / dei_LegalEntityAxis = skyw_SkyWestAirlinesIncMember / us-gaap_TypeOfArrangementAxis = skyw_USAirwaysExpressProrateAgreementMember |  |
Prorate Agreement [Member] | ExpressJet |  |  |  |  |  |  |  |  |  |  |
Agreements with other airlines |  |  |  |  |  |  |  |  |  |  |
Notice period for termination of agreement |  |  |  |  |  |  |  |  | 120 days |  |
Prorate Agreement [Member] | Sky West Airlines Inc |  |  |  |  |  |  |  |  |  |  |
Agreements with other airlines |  |  |  |  |  |  |  |  |  |  |
Notice period for termination of agreement |  |  |  |  |  |  |  |  | 30 days |  |
Prorate Agreement [Member] | CRJ 200 | ExpressJet |  |  |  |  |  |  |  |  |  |  |
Agreements with other airlines |  |  |  |  |  |  |  |  |  |  |
Number of aircraft under contract |  |  |  |  |  |  |  |  | 2 us-gaap_NumberOfAircraftOperated / us-gaap_AircraftTypeAxis = skyw_CRJ200Member / dei_LegalEntityAxis = skyw_ExpressJetMember / us-gaap_TypeOfArrangementAxis = skyw_ProrateAgreementMember |  |
Prorate Agreement [Member] | CRJ 200 | Sky West Airlines Inc |  |  |  |  |  |  |  |  |  |  |
Agreements with other airlines |  |  |  |  |  |  |  |  |  |  |
Number of aircraft under contract |  |  |  |  |  |  |  |  | 10 us-gaap_NumberOfAircraftOperated / us-gaap_AircraftTypeAxis = skyw_CRJ200Member / dei_LegalEntityAxis = skyw_SkyWestAirlinesIncMember / us-gaap_TypeOfArrangementAxis = skyw_ProrateAgreementMember |  |
Prorate Agreement [Member] | EMB 120 | Sky West Airlines Inc |  |  |  |  |  |  |  |  |  |  |
Agreements with other airlines |  |  |  |  |  |  |  |  |  |  |
Number of aircraft under contract |  |  |  |  |  |  |  |  | 6 us-gaap_NumberOfAircraftOperated / us-gaap_AircraftTypeAxis = skyw_EMB120Member / dei_LegalEntityAxis = skyw_SkyWestAirlinesIncMember / us-gaap_TypeOfArrangementAxis = skyw_ProrateAgreementMember |  |

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