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v2.4.1.9

Nature of Operations and Summary of Significant Accounting Policies (Details 2) (USD $) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Cash and Cash Equivalents |  |  |  |
Restricted cash | $ 11,582,000 us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue | $ 12,219,000 us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue |  |
Marketable Securities |  |  |  |
Total cash and cash equivalents | 132,275,000 us-gaap_CashAndCashEquivalentsAtCarryingValue | 170,636,000 us-gaap_CashAndCashEquivalentsAtCarryingValue | 133,772,000 us-gaap_CashAndCashEquivalentsAtCarryingValue | 129,526,000 us-gaap_CashAndCashEquivalentsAtCarryingValue
Amortized Cost | 415,726,000 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis | 486,753,000 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis |  |
Gross unrealized holding gains | 12,000 skyw_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax | 495,000 skyw_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax |  |
Gross unrealized holding losses | (465,000)skyw_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax | (9,000)skyw_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax |  |
Total marketable securities | 415,273,000 us-gaap_AvailableForSaleSecurities | 487,239,000 us-gaap_AvailableForSaleSecurities |  |
Total cash and cash equivalents and available for sale securities, amortized cost | 548,001,000 skyw_CashAndCashEquivalentsAndAvailableForSaleDebtSecuritiesAmortizedCostBasis | 657,389,000 skyw_CashAndCashEquivalentsAndAvailableForSaleDebtSecuritiesAmortizedCostBasis |  |
Total cash and cash equivalents and available for sale securities, fair market value | 547,548,000 skyw_CashAndCashEquivalentsAndAvailableForSaleSecurities | 657,875,000 skyw_CashAndCashEquivalentsAndAvailableForSaleSecurities |  |
Maturities of marketable securities |  |  |  |
Year 2015 | 233,858,000 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost |  |  |
Years 2016 through 2019 | 181,406,000 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost |  |  |
Thereafter | 2,317,000 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost |  |  |
Marketable securities | 415,300,000 us-gaap_AvailableForSaleSecuritiesCurrent | 487,200,000 us-gaap_AvailableForSaleSecuritiesCurrent |  |
Maximum period for redemption | 1 year |  |  |
Investment as non-current | 2,300,000 us-gaap_AvailableForSaleSecuritiesNoncurrent | 2,200,000 us-gaap_AvailableForSaleSecuritiesNoncurrent |  |
Bonds and bond funds |  |  |  |
Marketable Securities |  |  |  |
Amortized Cost | 410,618,000 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateBondSecuritiesMember | 486,571,000 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateBondSecuritiesMember |  |
Gross unrealized holding gains | 9,000 skyw_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateBondSecuritiesMember | 487,000 skyw_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateBondSecuritiesMember |  |
Gross unrealized holding losses | (464,000)skyw_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateBondSecuritiesMember | (9,000)skyw_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateBondSecuritiesMember |  |
Total marketable securities | 410,163,000 us-gaap_AvailableForSaleSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateBondSecuritiesMember | 487,049,000 us-gaap_AvailableForSaleSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CorporateBondSecuritiesMember |  |
Asset-backed Securities |  |  |  |
Marketable Securities |  |  |  |
Amortized Cost | 5,108,000 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AssetBackedSecuritiesMember | 182,000 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AssetBackedSecuritiesMember |  |
Gross unrealized holding gains | 3,000 skyw_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AssetBackedSecuritiesMember | 8,000 skyw_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AssetBackedSecuritiesMember |  |
Gross unrealized holding losses | (1,000)skyw_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AssetBackedSecuritiesMember |  |  |
Total marketable securities | $ 5,110,000 us-gaap_AvailableForSaleSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AssetBackedSecuritiesMember | $ 190,000 us-gaap_AvailableForSaleSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AssetBackedSecuritiesMember |  |

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