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Commitments and Contingencies (Details 2) (USD $) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Commitments and Contingencies |  |  |
Allowance for doubtful accounts | 326,600 us-gaap_AllowanceForDoubtfulAccountsReceivable | 94,000 us-gaap_AllowanceForDoubtfulAccountsReceivable |
Concentration Risk and Significant Customers |  |  |
Number of full-time equivalent employees | 18,500 skyw_ConcentrationRiskEquivalentEmployeesNumber |  |
Atlantic southeast pilots and expressjet delaware pilots |  |  |
Concentration Risk and Significant Customers |  |  |
Number of employee group for joint bargaining agreement | 2 skyw_ConcentrationRiskNumberOfEmployeeGroup / skyw_EmployeeGroupAxis = skyw_AtlanticSoutheastPilotsAndExpressJetDelawarePilotsMember |  |
Revenue from Rights Concentration Risk | Customer Concentration Risk | Delta, United, and Continental Combined |  |  |
Concentration Risk and Significant Customers |  |  |
Concentration risk (as a percent) | 88.70%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_RevenueFromRightsConcentrationRiskMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember / us-gaap_MajorCustomersAxis = skyw_DeltaUnitedContinentalCombinedMember | 91.60%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_RevenueFromRightsConcentrationRiskMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember / us-gaap_MajorCustomersAxis = skyw_DeltaUnitedContinentalCombinedMember | 94.80%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_RevenueFromRightsConcentrationRiskMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember / us-gaap_MajorCustomersAxis = skyw_DeltaUnitedContinentalCombinedMember
Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk |  |  |
Concentration Risk and Significant Customers |  |  |
Concentration risk (as a percent) | 45.10%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_WorkforceSubjectToCollectiveBargainingArrangementsMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_LaborForceConcentrationRiskMember |  |
Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk | Atlantic Southeast Pilots |  |  |
Concentration Risk and Significant Customers |  |  |
Approximate Number of Active Employees | 1,631 skyw_ConcentrationRiskNumberOfActiveEmployees / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_WorkforceSubjectToCollectiveBargainingArrangementsMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_LaborForceConcentrationRiskMember / skyw_EmployeeGroupAxis = skyw_AtlanticSoutheastPilotsMember |  |
Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk | Atlantic Southeast Flight Attendants |  |  |
Concentration Risk and Significant Customers |  |  |
Approximate Number of Active Employees | 1,132 skyw_ConcentrationRiskNumberOfActiveEmployees / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_WorkforceSubjectToCollectiveBargainingArrangementsMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_LaborForceConcentrationRiskMember / skyw_EmployeeGroupAxis = skyw_AtlanticSoutheastFlightAttendantsMember |  |
Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk | Atlantic Southeast Flight Controllers |  |  |
Concentration Risk and Significant Customers |  |  |
Approximate Number of Active Employees | 53 skyw_ConcentrationRiskNumberOfActiveEmployees / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_WorkforceSubjectToCollectiveBargainingArrangementsMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_LaborForceConcentrationRiskMember / skyw_EmployeeGroupAxis = skyw_AtlanticSoutheastFlightControllersMember |  |
Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk | Atlantic Southeast Mechanics |  |  |
Concentration Risk and Significant Customers |  |  |
Approximate Number of Active Employees | 554 skyw_ConcentrationRiskNumberOfActiveEmployees / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_WorkforceSubjectToCollectiveBargainingArrangementsMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_LaborForceConcentrationRiskMember / skyw_EmployeeGroupAxis = skyw_AtlanticSoutheastMechanicsMember |  |
Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk | Atlantic Southeast Stock Clerks |  |  |
Concentration Risk and Significant Customers |  |  |
Approximate Number of Active Employees | 60 skyw_ConcentrationRiskNumberOfActiveEmployees / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_WorkforceSubjectToCollectiveBargainingArrangementsMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_LaborForceConcentrationRiskMember / skyw_EmployeeGroupAxis = skyw_AtlanticSoutheastStockClerksMember |  |
Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk | ExpressJet Delaware Pilots |  |  |
Concentration Risk and Significant Customers |  |  |
Approximate Number of Active Employees | 2,577 skyw_ConcentrationRiskNumberOfActiveEmployees / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_WorkforceSubjectToCollectiveBargainingArrangementsMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_LaborForceConcentrationRiskMember / skyw_EmployeeGroupAxis = skyw_ExpressJetDelawarePilotsMember |  |
Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk | ExpressJet Delaware Flight Attendants |  |  |
Concentration Risk and Significant Customers |  |  |
Approximate Number of Active Employees | 1,210 skyw_ConcentrationRiskNumberOfActiveEmployees / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_WorkforceSubjectToCollectiveBargainingArrangementsMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_LaborForceConcentrationRiskMember / skyw_EmployeeGroupAxis = skyw_ExpressJetDelawareFlightAttendantsMember |  |
Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk | ExpressJet Delaware Mechanics |  |  |
Concentration Risk and Significant Customers |  |  |
Approximate Number of Active Employees | 942 skyw_ConcentrationRiskNumberOfActiveEmployees / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_WorkforceSubjectToCollectiveBargainingArrangementsMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_LaborForceConcentrationRiskMember / skyw_EmployeeGroupAxis = skyw_ExpressJetDelawareMechanicsMember |  |
Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk | ExpressJet Delaware Dispatchers |  |  |
Concentration Risk and Significant Customers |  |  |
Approximate Number of Active Employees | 81 skyw_ConcentrationRiskNumberOfActiveEmployees / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_WorkforceSubjectToCollectiveBargainingArrangementsMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_LaborForceConcentrationRiskMember / skyw_EmployeeGroupAxis = skyw_ExpressJetDelawareDispatchersMember |  |
Workforce Subject to Collective Bargaining Arrangements | Labor Force Concentration Risk | ExpressJet Delaware Stock Clerks |  |  |
Concentration Risk and Significant Customers |  |  |
Approximate Number of Active Employees | 97 skyw_ConcentrationRiskNumberOfActiveEmployees / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_WorkforceSubjectToCollectiveBargainingArrangementsMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_LaborForceConcentrationRiskMember / skyw_EmployeeGroupAxis = skyw_ExpressJetDelawareStockClerksMember |  |

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