$SKYW
SKYWEST INC Stock $skyw

$skyw Overview Financials Valuation SEC Filings Company Website

2020 Q4 Form 10-K Financial Statement

#000155837021001367 Filed on February 22, 2021

Income Statement

Concept	2020 Q4	2020	2019 Q4
Revenue	$589.6M	$2.127B	$743.6M
YoY Change	-20.7%	-28.43%	-5.08%
Cost Of Revenue	$242.7M	$2.018B	$215.0M
YoY Change	12.88%	-17.95%	-5.58%
Gross Profit	$347.0M	$108.8M	$528.5M
YoY Change	-34.34%	-78.76%	-8.21%
Gross Profit Margin	58.85%	5.12%	71.07%
Selling, General & Admin	$212.2M	$826.1M	$249.0M
YoY Change	-14.78%	-17.53%	-16.92%
% of Gross Profit	61.15%	759.27%	47.11%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$110.1M	$475.0M	$95.20M
YoY Change	15.65%	29.03%	7.94%
% of Gross Profit	31.73%	436.54%	18.01%
Operating Expenses	$378.0M	$2.018B	$403.3M
YoY Change	-6.27%	-17.95%	-11.23%
Operating Profit	-$27.67M	$108.8M	$125.3M
YoY Change	-122.08%	-78.76%	42.11%
Interest Expense	-$31.70M	$123.2M	-$27.80M
YoY Change	14.03%	-3.59%	-9.74%
% of Operating Profit		113.21%	-22.19%
Other Income/Expense, Net	$0.00	-$116.1M	$300.0K
YoY Change	-100.0%	76.08%	50.0%
Pretax Income	-$59.40M	-$7.327M	$97.80M
YoY Change	-160.74%	-101.64%	7.59%
Income Tax	-$12.90M	$1.188M	$25.30M
% Of Pretax Income			25.87%
Net Earnings	-$46.50M	-$8.515M	$72.50M
YoY Change	-164.14%	-102.5%	8.05%
Net Earnings / Revenue	-7.89%	-0.4%	9.75%
Basic Earnings Per Share	-$0.93	-$0.17	$1.44
Diluted Earnings Per Share	-$0.93	-$0.17	$1.43
COMMON SHARES
Basic Shares Outstanding	50.18M	50.20M	50.40M
Diluted Shares Outstanding	50.18M	50.20M	50.80M

Balance Sheet

Concept	2020 Q4	2020	2019 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$825.9M	$825.9M	$520.2M
YoY Change	58.78%	58.77%	-24.54%
Cash & Equivalents	$215.7M	$215.7M	$87.21M
Short-Term Investments	$610.2M	$610.2M	$433.0M
Other Short-Term Assets	$31.24M	$27.30M	$35.55M
YoY Change	-12.14%	-23.31%	33.59%
Inventory	$91.20M	$91.20M	$110.5M
Prepaid Expenses
Receivables	$34.50M	$34.50M	$83.00M
Other Receivables	$3.900M	$3.900M	$11.10M
Total Short-Term Assets	$982.8M	$982.8M	$760.3M
YoY Change	29.26%	29.26%	-25.51%
LONG-TERM ASSETS
Property, Plant & Equipment	$5.362B	$5.644B	$5.395B
YoY Change	-0.6%	-1.51%	7.77%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$25.50M	$25.50M
YoY Change
Other Assets	$260.4M	$234.9M	$166.1M
YoY Change	56.79%	41.42%	58.42%
Total Long-Term Assets	$5.905B	$5.905B	$5.897B
YoY Change	0.14%	0.14%	11.42%
TOTAL ASSETS
Total Short-Term Assets	$982.8M	$982.8M	$760.3M
Total Long-Term Assets	$5.905B	$5.905B	$5.897B
Total Assets	$6.888B	$6.888B	$6.657B
YoY Change	3.46%	3.46%	5.45%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$278.7M	$278.7M	$284.5M
YoY Change	-2.04%	-2.04%	-14.31%
Accrued Expenses	$234.8M	$234.8M	$243.7M
YoY Change	-3.65%	-3.65%	37.22%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$402.2M	$402.2M	$364.1M
YoY Change	10.44%	10.46%	3.97%
Total Short-Term Liabilities	$941.7M	$941.7M	$924.7M
YoY Change	1.84%	1.84%	-0.02%
LONG-TERM LIABILITIES
Long-Term Debt	$2.802B	$2.802B	$2.629B
YoY Change	6.56%	6.56%	-6.43%
Other Long-Term Liabilities	$173.0M	$378.9M	$45.63M
YoY Change	279.2%	24.27%	-31.76%
Total Long-Term Liabilities	$2.975B	$3.180B	$2.675B
YoY Change	11.21%	8.4%	-7.02%
TOTAL LIABILITIES
Total Short-Term Liabilities	$941.7M	$941.7M	$924.7M
Total Long-Term Liabilities	$2.975B	$3.180B	$2.675B
Total Liabilities	$3.916B	$4.748B	$3.599B
YoY Change	8.81%	5.93%	-5.32%
SHAREHOLDERS EQUITY
Retained Earnings	$2.052B		$2.079B
YoY Change	-1.31%		17.03%
Common Stock
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$2.140B	$2.140B	$2.175B
YoY Change
Total Liabilities & Shareholders Equity	$6.888B	$6.888B	$6.657B
YoY Change	3.46%	3.46%	5.45%

Cashflow Statement

Concept	2020 Q4	2020	2019 Q4
OPERATING ACTIVITIES
Net Income	-$46.50M	-$8.515M	$72.50M
YoY Change	-164.14%	-102.5%	8.05%
Depreciation, Depletion And Amortization	$110.1M	$475.0M	$95.20M
YoY Change	15.65%	29.03%	7.94%
Cash From Operating Activities	$84.90M	$633.6M	$138.5M
YoY Change	-38.7%	-12.13%	-39.63%
INVESTING ACTIVITIES
Capital Expenditures	-$267.5M	$12.68M	-$202.4M
YoY Change	32.16%	-84.27%	-20.35%
Acquisitions
YoY Change
Other Investing Activities	-$154.6M	$89.43M	-$149.4M
YoY Change	3.48%	-2263.76%	-1240.46%
Cash From Investing Activities	-$422.1M	-$683.5M	-$351.7M
YoY Change	20.02%	4.02%	45.93%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		$17.18M
YoY Change		-76.21%
Debt Paid & Issued, Net		$187.4M
YoY Change		-51.0%
Cash From Financing Activities	134.6M	178.4M	-7.600M
YoY Change	-1871.05%	-158.47%	-149.03%
NET CHANGE
Cash From Operating Activities	84.90M	633.6M	138.5M
Cash From Investing Activities	-422.1M	-683.5M	-351.7M
Cash From Financing Activities	134.6M	178.4M	-7.600M
Net Change In Cash	-202.6M	128.5M	-220.8M
YoY Change	-8.24%	-153.29%	-5761.54%
FREE CASH FLOW
Cash From Operating Activities	$84.90M	$633.6M	$138.5M
Capital Expenditures	-$267.5M	$12.68M	-$202.4M
Free Cash Flow	$352.4M	$620.9M	$340.9M
YoY Change	3.37%	-3.05%	-29.49%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value
CY2020Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2019Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2019Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0
CY2020Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0
CY2020	dei	Entity Central Index Key EntityCentralIndexKey	0000793733
CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2020	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
CY2020	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2020	dei	Entity Registrant Name EntityRegistrantName	SKYWEST INC
CY2020Q4	us-gaap	Preferred Stock Including Additional Paid In Capital PreferredStockIncludingAdditionalPaidInCapital
CY2019Q4	us-gaap	Preferred Stock Including Additional Paid In Capital PreferredStockIncludingAdditionalPaidInCapital
CY2020	dei	Amendment Flag AmendmentFlag	false
CY2020	dei	Document Type DocumentType	10-K
CY2020	dei	Document Annual Report DocumentAnnualReport	true
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020	dei	Document Transition Report DocumentTransitionReport	false
CY2020	dei	Entity File Number EntityFileNumber	0-14719
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	UT
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	87-0292166
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	444 South River Road
CY2020	dei	Entity Address City Or Town EntityAddressCityOrTown	St. George
CY2020	dei	Entity Address State Or Province EntityAddressStateOrProvince	UT
CY2020	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	84790
CY2020	dei	City Area Code CityAreaCode	435
CY2020	dei	Local Phone Number LocalPhoneNumber	634-3000
CY2020	dei	Security12b Title Security12bTitle	Common Stock, No Par Value
CY2020	dei	Trading Symbol TradingSymbol	SKYW
CY2020	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2020	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2020	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2020	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2020	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2020	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2020	dei	Entity Small Business EntitySmallBusiness	false
CY2020	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2020	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2020	dei	Entity Shell Company EntityShellCompany	false
CY2020Q2	dei	Entity Public Float EntityPublicFloat	1635572360
CY2021Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	50344080
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	215723000
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	87206000
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities Current AvailableForSaleSecuritiesDebtSecuritiesCurrent	610185000
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities Current AvailableForSaleSecuritiesDebtSecuritiesCurrent	432966000
CY2020Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	3916000
CY2019Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	11141000
CY2020Q4	us-gaap	Accounts And Other Receivables Net Current AccountsAndOtherReceivablesNetCurrent	34462000
CY2019Q4	us-gaap	Accounts And Other Receivables Net Current AccountsAndOtherReceivablesNetCurrent	82977000
CY2020Q4	us-gaap	Airline Related Inventory Net AirlineRelatedInventoryNet	91196000
CY2019Q4	us-gaap	Airline Related Inventory Net AirlineRelatedInventoryNet	110503000
CY2020Q4	us-gaap	Other Assets Current OtherAssetsCurrent	27320000
CY2019Q4	us-gaap	Other Assets Current OtherAssetsCurrent	35553000
CY2020Q4	us-gaap	Assets Current AssetsCurrent	982802000
CY2019Q4	us-gaap	Assets Current AssetsCurrent	760346000
CY2020Q4	us-gaap	Flight Equipment Gross FlightEquipmentGross	7527555000
CY2019Q4	us-gaap	Flight Equipment Gross FlightEquipmentGross	7078801000
CY2020Q4	us-gaap	Deposits On Flight Equipment DepositsOnFlightEquipment	31625000
CY2019Q4	us-gaap	Deposits On Flight Equipment DepositsOnFlightEquipment	48858000
CY2020Q4	skyw	Buildings And Ground Equipment Gross BuildingsAndGroundEquipmentGross	258863000
CY2019Q4	skyw	Buildings And Ground Equipment Gross BuildingsAndGroundEquipmentGross	265398000
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	7818043000
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	7393057000
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	2455995000
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	1998376000
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	5362048000
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	5394681000
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	282362000
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	336009000
CY2020Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	260410000
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	166093000
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CY2019Q4	us-gaap	Assets Assets	6657129000
CY2020Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	402158000
CY2019Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	364126000
CY2020Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	278677000
CY2019Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	284473000
CY2020Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	125944000
CY2019Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	133856000
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	82641000
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	94806000
CY2020Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	26183000
CY2019Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	15004000
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CY2019Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	32411000
CY2020Q4	us-gaap	Liabilities Current LiabilitiesCurrent	941722000
CY2019Q4	us-gaap	Liabilities Current LiabilitiesCurrent	924676000
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2801538000
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	6887622000
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CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	205845000
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	259237000
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CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	45633000
CY2019Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000
CY2020Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000
CY2019Q4	us-gaap	Common Stock No Par Value CommonStockNoParValue	0
CY2020Q4	us-gaap	Common Stock No Par Value CommonStockNoParValue	0
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CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	120000000
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CY2020Q4	us-gaap	Common Stocks Including Additional Paid In Capital CommonStocksIncludingAdditionalPaidInCapital	704675000
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CY2020Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	31913635
CY2019Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	31420179
CY2020Q4	us-gaap	Treasury Stock Common Value TreasuryStockCommonValue	617136000
CY2019Q4	us-gaap	Treasury Stock Common Value TreasuryStockCommonValue	590971000
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	2139545000
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	2175014000
CY2020	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	2127106000
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	2971963000
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	3221679000
CY2020	us-gaap	Labor And Related Expense LaborAndRelatedExpense	826109000
CY2019	us-gaap	Labor And Related Expense LaborAndRelatedExpense	1001746000
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CY2020	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	2018304000
CY2019	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	2459705000
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CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	512258000
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CY2018	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	20744000
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	1964281000
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	340099000
CY2020	us-gaap	Investment Income Interest InvestmentIncomeInterest	5879000
CY2019	us-gaap	Investment Income Interest InvestmentIncomeInterest	14131000
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CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1188000
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	106206000
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	85942000
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CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.17
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CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.62
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.30
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CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50932000
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CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	50195000
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	51375000
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	52871000
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-8515000
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	340099000
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CY2018	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	18000
CY2018	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	2174000
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CY2018	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	3038000
CY2018	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	13105000
CY2018	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	54448000
CY2018	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.40
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.14
CY2020	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	7019000
CY2020	skyw	Coronavirus Aid Relief And Economic Security Act Warrant Issuance CoronavirusAidReliefAndEconomicSecurityActWarrantIssuance	8248000
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	2139545000
CY2020	us-gaap	Profit Loss ProfitLoss	-8515000
CY2019	us-gaap	Profit Loss ProfitLoss	340099000
CY2018	us-gaap	Profit Loss ProfitLoss	280372000
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	474959000
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	368098000
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	334589000
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	6802000
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	10274000
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	13105000
CY2020	skyw	Write Off Of Maintenance Assets WriteOffOfMaintenanceAssets	-3255000
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	10000
CY2019	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	32000
CY2019	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	3106000
CY2019	skyw	Treasury Shares Withheld For Payment Of Tax TreasurySharesWithheldForPaymentOfTax	9313000
CY2019	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	3165000
CY2019	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	5770000
CY2019	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	16145000
CY2019	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	78476000
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.48
CY2019	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	24364000
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	2175014000
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-8515000
CY2020	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	38000
CY2020	skyw	Treasury Shares Withheld For Payment Of Tax TreasurySharesWithheldForPaymentOfTax	6165000
CY2020	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	2781000
CY2020	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	6802000
CY2020	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	20000000
CY2020	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	17087000
CY2020	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-445000
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	6100000
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	109654000
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	99139000
CY2019	skyw	Gain Loss On Sale Of Subsidiaries GainLossOnSaleOfSubsidiaries	46525000
CY2019	skyw	Special Charges And Write Down Value Of Assets SpecialChargesAndWriteDownValueOfAssets	21869000
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-26831000
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	40700000
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	21464000
CY2020	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-7225000
CY2019	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-14795000
CY2018	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	20620000
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-19307000
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	4303000
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	7935000
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-8233000
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-2707000
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-77484000
CY2020	skyw	Increase Decrease In Operating Lease Right Of Use Asset IncreaseDecreaseInOperatingLeaseRightOfUseAsset	-53647000
CY2020	skyw	Increase Decrease In Operating Lease Liabilities IncreaseDecreaseInOperatingLeaseLiabilities	65557000
CY2019	skyw	Increase Decrease In Operating Lease Liabilities IncreaseDecreaseInOperatingLeaseLiabilities	895000
CY2020	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	110728000
CY2018	us-gaap	Payments For Flight Equipment PaymentsForFlightEquipment	1062380000
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	12678000
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	80586000
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	34397000
CY2020	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	3239000
CY2018	skyw	Increase Decrease In Deferred Aircraft Credits IncreaseDecreaseInDeferredAircraftCredits	-14243000
CY2020	skyw	Increase Decrease In Accounts Payable And Other Current Liabilities IncreaseDecreaseInAccountsPayableAndOtherCurrentLiabilities	-26984000
CY2019	skyw	Increase Decrease In Accounts Payable And Other Current Liabilities IncreaseDecreaseInAccountsPayableAndOtherCurrentLiabilities	-54043000
CY2018	skyw	Increase Decrease In Accounts Payable And Other Current Liabilities IncreaseDecreaseInAccountsPayableAndOtherCurrentLiabilities	62107000
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	633563000
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	721030000
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	802534000
CY2020	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	1347775000
CY2019	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	1938750000
CY2018	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	2308768000
CY2020	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	1170556000
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	1866761000
CY2018	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	2451344000
CY2019	us-gaap	Proceeds From Divestiture Of Interest In Consolidated Subsidiaries ProceedsFromDivestitureOfInterestInConsolidatedSubsidiaries	53200000
CY2020	us-gaap	Payments For Flight Equipment PaymentsForFlightEquipment	425618000
CY2019	us-gaap	Payments For Flight Equipment PaymentsForFlightEquipment	581329000
CY2019	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	26008000
CY2020	skyw	Payments For Deposits On Aircraft PaymentsForDepositsOnAircraft	9625000
CY2019	skyw	Payments For Deposits On Aircraft PaymentsForDepositsOnAircraft	52817000
CY2018	skyw	Payments For Deposits On Aircraft PaymentsForDepositsOnAircraft	41937000
CY2020	skyw	Return Of Deposits On Aircraft ReturnOfDepositsOnAircraft	27858000
CY2019	skyw	Return Of Deposits On Aircraft ReturnOfDepositsOnAircraft	46346000
CY2018	skyw	Return Of Deposits On Aircraft ReturnOfDepositsOnAircraft	49550000
CY2020	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	89428000
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-4133000
CY2018	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	36816000
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-683471000
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-657034000
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-983404000
CY2020	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	406364000
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	200040000
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	784665000
CY2020	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	187404000
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	382442000
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	370775000
CY2020	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	2819000
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	6271000
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	5212000
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	20000000
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	78476000
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	54448000
CY2019	us-gaap	Origination Of Loan To Purchase Common Stock OriginationOfLoanToPurchaseCommonStock	16145000
CY2020	skyw	Treasury Shares Withheld For Payment Of Taxes TreasurySharesWithheldForPaymentOfTaxes	6165000
CY2019	skyw	Treasury Shares Withheld For Payment Of Taxes TreasurySharesWithheldForPaymentOfTaxes	9313000
CY2018	skyw	Treasury Shares Withheld For Payment Of Taxes TreasurySharesWithheldForPaymentOfTaxes	13556000
CY2020	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	4130000
CY2019	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	1642000
CY2020	skyw	Number Of Aircrafts Held By Entity NumberOfAircraftsHeldByEntity	601
CY2018	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	3892000
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	13059000
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	23467000
CY2018	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	19744000
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	178425000
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-305174000
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	327462000
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	128517000
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-241178000
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	146592000
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	87206000
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	328384000
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	181792000
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	215723000
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	87206000
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	328384000
CY2020	skyw	Noncash Acquisition Of Rotable Spare Parts NoncashAcquisitionOfRotableSpareParts	22187000
CY2019	skyw	Noncash Acquisition Of Rotable Spare Parts NoncashAcquisitionOfRotableSpareParts	16514000
CY2018	skyw	Noncash Acquisition Of Rotable Spare Parts NoncashAcquisitionOfRotableSpareParts	367000
CY2019	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	14475000
CY2018	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	59132000
CY2019	us-gaap	Contribution Of Property ContributionOfProperty	22313000
CY2019	skyw	Right Of Use Assets On Aircraft Acquired Under Operating Leases RightOfUseAssetsOnAircraftAcquiredUnderOperatingLeases	153566000
CY2019	skyw	Lease Liability Arising From Recognition Of Right Of Use Asset LeaseLiabilityArisingFromRecognitionOfRightOfUseAsset	456472000
CY2020	skyw	Coronavirus Aid Relief And Economic Security Act Warrant Issuance CoronavirusAidReliefAndEconomicSecurityActWarrantIssuance	8248000
CY2020	us-gaap	Interest Paid Net InterestPaidNet	125440000
CY2019	us-gaap	Interest Paid Net InterestPaidNet	131733000
CY2018	us-gaap	Interest Paid Net InterestPaidNet	118268000
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1780000
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	2490000
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	2661000
CY2019	skyw	Increase Decrease In Carrying Amount Of Assets IncreaseDecreaseInCarryingAmountOfAssets	-101448000
CY2019	skyw	Increase Decrease In Carrying Amount Of Liabilities IncreaseDecreaseInCarryingAmountOfLiabilities	-68341000
CY2019	us-gaap	Gain Or Loss On Sale Of Stock In Subsidiary GainOrLossOnSaleOfStockInSubsidiary	79632000
CY2019	skyw	Gain Loss On Sale Of Subsidiaries GainLossOnSaleOfSubsidiaries	46525000
CY2020Q4	skyw	Number Of Daily Departures To Different Destinations NumberOfDailyDeparturesToDifferentDestinations	1770
CY2020	skyw	Number Of Aircrafts Held By Entity NumberOfAircraftsHeldByEntity	601
CY2020	us-gaap	Use Of Estimates UseOfEstimates	<p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Use of Estimates</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt 0pt 12pt 0pt;">The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.</p>
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	0
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	0
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	215723000
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	215723000
CY2020Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	610185000
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	610185000
CY2020Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	825908000
CY2020Q4	skyw	Cash And Cash Equivalents And Available For Sale Securities CashAndCashEquivalentsAndAvailableForSaleSecurities	825908000
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	87206000
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	87206000
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	432966000
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	432966000
CY2019Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	520172000
CY2019Q4	skyw	Cash And Cash Equivalents And Available For Sale Securities CashAndCashEquivalentsAndAvailableForSaleSecurities	520172000
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	610200000
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	433000000.0
CY2020	skyw	Available For Sale Securities Maximum Period For Redemption AvailableForSaleSecuritiesMaximumPeriodForRedemption	P1Y
CY2020Q4	us-gaap	Airline Related Inventory Valuation Reserves AirlineRelatedInventoryValuationReserves	19700000
CY2019Q4	us-gaap	Airline Related Inventory Valuation Reserves AirlineRelatedInventoryValuationReserves	15900000
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	5400000000
CY2018	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0
CY2019	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0
CY2020	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0
CY2020	us-gaap	Interest Costs Incurred Capitalized InterestCostsIncurredCapitalized	1700000
CY2019	us-gaap	Interest Costs Incurred Capitalized InterestCostsIncurredCapitalized	1600000
CY2018	us-gaap	Interest Costs Incurred Capitalized InterestCostsIncurredCapitalized	1500000
CY2020	skyw	Long Lived Maintenance Assets Written Off LongLivedMaintenanceAssetsWrittenOff	3700000
CY2020	skyw	Percentage Of Available Seat Miles Flown Under Fixed Fee Arrangements PercentageOfAvailableSeatMilesFlownUnderFixedFeeArrangements	0.870
CY2020	skyw	Percentage Of Available Seat Miles Flown Under Pro Rate Arrangements PercentageOfAvailableSeatMilesFlownUnderProRateArrangements	0.130
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	5400000000
CY2020	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	110700000
CY2020	us-gaap	Operating Lease Lease Income Lease Payments OperatingLeaseLeaseIncomeLeasePayments	34791000
CY2019	us-gaap	Operating Leases Income Statement Lease Revenue OperatingLeasesIncomeStatementLeaseRevenue	27552000
CY2018	us-gaap	Operating Leases Income Statement Lease Revenue OperatingLeasesIncomeStatementLeaseRevenue	3923000
CY2020	us-gaap	Operating Lease Variable Lease Income OperatingLeaseVariableLeaseIncome	5710000
CY2019	us-gaap	Operating Lease Variable Lease Income OperatingLeaseVariableLeaseIncome	9608000
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Next Twelve Months LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths	43573000
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Two Years LessorOperatingLeasePaymentsToBeReceivedTwoYears	43390000
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Three Years LessorOperatingLeasePaymentsToBeReceivedThreeYears	42837000
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Four Years LessorOperatingLeasePaymentsToBeReceivedFourYears	42530000
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Five Years LessorOperatingLeasePaymentsToBeReceivedFiveYears	39082000
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received Thereafter LessorOperatingLeasePaymentsToBeReceivedThereafter	155089000
CY2020Q4	us-gaap	Lessor Operating Lease Payments To Be Received LessorOperatingLeasePaymentsToBeReceived	366501000
CY2020Q4	us-gaap	Receivables Net Current ReceivablesNetCurrent	34500000
CY2019Q4	us-gaap	Receivables Net Current ReceivablesNetCurrent	83000000.0
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Policy For Uncollectible Amounts FinancingReceivableAllowanceForCreditLossesPolicyForUncollectibleAmounts	<p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 12pt 0pt;"><span style="font-style:italic;font-weight:bold;">Allowance for Credit Losses</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt 0pt 12pt 0pt;">The Company monitors publicly available credit ratings for entities for which the Company has a significant receivable balance. As of December 31, 2020, the Company had gross receivables of $56.1 million in current assets and gross receivables of $157.4 million in other long-term assets. The Company has established credit loss reserves based on publicly available historic default rates issued by a third party for companies with similar credit ratings, factoring in the term of the respective accounts receivable or note receivable. During the twelve months ended December 31, 2020, the collectability on a note receivable from Kair Enterprises, Inc. associated with the Company’s sale of ExpressJet in 2019 became uncertain due to ExpressJet ceasing operations during the year and the credit ratings were lowered on certain entities for which the Company has outstanding accounts receivable or notes receivable, which were the primary drivers for the increase in the Company’s credit loss reserve when benchmarked against historic default rates as of January 1, 2020, when the Company adopted Accounting Standards Update (“ASU”) 2016-13, “Financial Instruments – Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments” (“Topic 326”)<span style="white-space:pre-wrap;">. </span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt 0pt 12pt 0pt;">The following table summarizes the changes in allowance for credit losses:</p><table style="border-collapse:collapse;font-size:16pt;height:max-content;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:51.99%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:15.06%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.57%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:30.36%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td></tr><tr><td style="vertical-align:bottom;width:51.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-weight:bold;visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:15.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="vertical-align:bottom;width:32.93%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">Allowance for Credit Losses</b></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:51.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Balance at January 1, 2020</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:15.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.57%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">$</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:30.36%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 15,388</p></td></tr><tr><td style="vertical-align:bottom;width:51.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Additions to credit loss reserves</p></td><td style="vertical-align:bottom;white-space:nowrap;width:15.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.57%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:30.36%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 30,837</p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:51.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Write-offs charged against allowance</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:15.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.57%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:30.36%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> —</p></td></tr><tr><td style="vertical-align:bottom;width:51.99%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Balance at December 31, 2020</p></td><td style="vertical-align:bottom;white-space:nowrap;width:15.06%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.57%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:30.36%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 46,225</p></td></tr></table>
CY2020Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	56100000
CY2020Q4	us-gaap	Accounts Receivable Gross Noncurrent AccountsReceivableGrossNoncurrent	157400000
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	15388000
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	30837000
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	46225000
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1074375
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	150000
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	207000
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-8515000
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	340099000
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	280372000
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50195000
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50932000
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	51914000
CY2019	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	443000
CY2018	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	957000
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	50195000
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	51375000
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	52871000
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.17
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.68
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.40
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.17
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.62
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.30
CY2020Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	3244000000.0
CY2020Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	3236000000.0
CY2019Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	3049100000
CY2019Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	3017500000
CY2019	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	3
CY2020	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2
CY2020Q4	skyw	Liquid Assets LiquidAssets	1530400000
CY2020Q4	skyw	Cash And Marketable Securities CashAndMarketableSecurities	825900000
CY2020Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	39500000
CY2019	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	3
CY2020	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2
CY2020	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	2127106000
CY2020	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	2018304000
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	474959000
CY2020	us-gaap	Interest Expense InterestExpense	123173000
CY2020	skyw	Segment Profit SegmentProfit	-14371000
CY2020Q4	us-gaap	Assets Assets	6887622000
CY2020	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	460483000
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	2971963000
CY2019	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	2459705000
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	368098000
CY2019	skyw	Special Charges And Write Down Value Of Assets SpecialChargesAndWriteDownValueOfAssets	21869000
CY2019	us-gaap	Interest Expense InterestExpense	127755000
CY2019	skyw	Segment Profit SegmentProfit	384503000
CY2019Q4	us-gaap	Assets Assets	6657129000
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	846470000
CY2018	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	3221679000
CY2018	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	2747399000
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	334589000
CY2018	us-gaap	Interest Expense InterestExpense	120409000
CY2018	skyw	Segment Profit SegmentProfit	353871000
CY2018Q4	us-gaap	Assets Assets	6313212000
CY2018	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	1156276000
CY2020Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	3236002000
CY2019Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	3017523000
CY2020Q4	skyw	Debt Instrument Carrying Amount Current DebtInstrumentCarryingAmountCurrent	-406005000
CY2019Q4	skyw	Debt Instrument Carrying Amount Current DebtInstrumentCarryingAmountCurrent	-367954000
CY2020Q4	us-gaap	Deferred Finance Costs Noncurrent Net DeferredFinanceCostsNoncurrentNet	28459000
CY2019Q4	us-gaap	Deferred Finance Costs Noncurrent Net DeferredFinanceCostsNoncurrentNet	20580000
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2801538000
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2628989000
CY2020Q4	skyw	Debt Instrument Carrying Amount Current DebtInstrumentCarryingAmountCurrent	-406005000
CY2019Q4	skyw	Debt Instrument Carrying Amount Current DebtInstrumentCarryingAmountCurrent	-367954000
CY2020Q4	us-gaap	Deferred Finance Costs Current Net DeferredFinanceCostsCurrentNet	3847000
CY2019Q4	us-gaap	Deferred Finance Costs Current Net DeferredFinanceCostsCurrentNet	3828000
CY2020Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	402158000
CY2019Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	364126000
CY2020Q4	us-gaap	Debt Instrument Interest Rate Effective Percentage DebtInstrumentInterestRateEffectivePercentage	0.040
CY2019Q4	us-gaap	Debt Instrument Interest Rate Effective Percentage DebtInstrumentInterestRateEffectivePercentage	0.042
CY2020	us-gaap	Repayments Of Debt RepaymentsOfDebt	30100000
CY2020	skyw	Total Repayment Of Debt TotalRepaymentOfDebt	30100000
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	406005000
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	407554000
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	418048000
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	372322000
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	447251000
CY2020Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	1184822000
CY2020Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	3236002000
CY2020Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	35500000
CY2019Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	8800000
CY2020Q4	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	39500000
CY2019Q4	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	66200000
CY2020Q4	skyw	Letters Of Credit And Surety Bond Outstanding Amount LettersOfCreditAndSuretyBondOutstandingAmount	61100000
CY2019Q4	skyw	Letters Of Credit And Surety Bond Outstanding Amount LettersOfCreditAndSuretyBondOutstandingAmount	61700000
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-4397000
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-4395000
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-21598000
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-875000
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	891000
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1465000
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	1575000
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-5272000
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-3504000
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-18558000
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	6659000
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	95655000
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	92250000
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-199000
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	14055000
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	12250000
CY2020	skyw	Deferred Income Tax Expense Benefit Provision DeferredIncomeTaxExpenseBenefitProvision	6460000
CY2019	skyw	Deferred Income Tax Expense Benefit Provision DeferredIncomeTaxExpenseBenefitProvision	109710000
CY2018	skyw	Deferred Income Tax Expense Benefit Provision DeferredIncomeTaxExpenseBenefitProvision	104500000
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1188000
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	106206000
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	85942000
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-1539000
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	93724000
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	76926000
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	173000
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	15645000
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	12711000
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	2539000
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	3934000
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	1956000
CY2020	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-892000
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-517000
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-1187000
CY2018	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	1192000
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-1434000
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-3525000
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-4548000
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	2341000
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-3055000
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-1108000
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1188000
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	106206000
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	85942000
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	19668000
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	20848000
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	229815000
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	358685000
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	4397000
CY2020Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards General Business DeferredTaxAssetsTaxCreditCarryforwardsGeneralBusiness	12765000
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards General Business DeferredTaxAssetsTaxCreditCarryforwardsGeneralBusiness	9114000
CY2020Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	27076000
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Other DeferredTaxAssetsTaxDeferredExpenseOther	34816000
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Other DeferredTaxAssetsTaxDeferredExpenseOther	17225000
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	324140000
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	410269000
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	892000
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	950071000
CY2020	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	427000
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	1032957000
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	950071000
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	1032957000
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	625931000
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	623580000
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Not Subject To Expiration DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration	4400000
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	14620000
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	14553000
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2223000
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	13899000
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	360000
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	67000
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	1569000
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	14980000
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	14620000
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	14553000
CY2019	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	67000
CY2020Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	360000
CY2019Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	67000
CY2020Q4	us-gaap	Workers Compensation Liability Current WorkersCompensationLiabilityCurrent	20700000
CY2019Q4	us-gaap	Workers Compensation Liability Current WorkersCompensationLiabilityCurrent	23900000
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	282400000
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	82600000
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	205800000
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	90300000
CY2020	skyw	Schedule Of Related Terms And Discount Rates ScheduleOfRelatedTermsAndDiscountRates	<p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt;">The table below presents lease related terms and discount rates as of December 31, 2020.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:79.99%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:68.87%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.72%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.73%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:22.44%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:3.21%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td></tr><tr style="height:1pt;"><td style="vertical-align:bottom;width:68.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.72%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.73%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:22.44%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:3.21%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></td></tr><tr style="height:1pt;"><td style="vertical-align:bottom;width:68.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.72%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.73%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:22.44%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:3.21%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></td></tr><tr style="height:8.65pt;"><td colspan="2" style="vertical-align:bottom;width:71.6%;margin:0pt;padding:0pt;"><div style="height:8.65pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;"></span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;"></span></p></div></div></td><td colspan="3" style="vertical-align:bottom;width:28.39%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><div style="height:8.65pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;text-align:center;margin:0pt;"><b style="font-weight:bold;">As of December 31, 2020</b></p></div></div></td></tr><tr><td style="vertical-align:bottom;width:68.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Weighted-average remaining lease term</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.72%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;margin:0pt;"> </p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:25.18%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:3.21%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"> </p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:68.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="white-space:pre-wrap;"> Operating leases</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.72%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.73%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:22.44%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">6.50 years</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:3.21%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td></tr><tr><td style="vertical-align:bottom;width:68.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Weighted-average discount rate</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.72%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.73%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:22.44%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"><span style="margin-right:0pt;visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:3.21%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:68.87%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="white-space:pre-wrap;"> Operating leases</span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.72%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.73%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:22.44%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;">6.1%</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:3.21%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td></tr></table>
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P6Y6M
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.061
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	94915000
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	104011000
CY2020	skyw	Variable And Short Term Lease Cost VariableAndShortTermLeaseCost	4619000
CY2019	skyw	Variable And Short Term Lease Cost VariableAndShortTermLeaseCost	5232000
CY2020	us-gaap	Sublease Income SubleaseIncome	6304000
CY2019	us-gaap	Sublease Income SubleaseIncome	1436000
CY2020	us-gaap	Lease Cost LeaseCost	93230000
CY2019	us-gaap	Lease Cost LeaseCost	107807000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	85869000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	77780000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	69530000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	28091000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	15751000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	82719000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	359740000
CY2020	us-gaap	Operating Lease Expense OperatingLeaseExpense	65300000
CY2019	us-gaap	Operating Lease Expense OperatingLeaseExpense	72000000.0
CY2018	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	154900000
CY2020	skyw	Operating Leases Expense Minimum Rentals OperatingLeasesExpenseMinimumRentals	20100000
CY2019	skyw	Operating Leases Expense Minimum Rentals OperatingLeasesExpenseMinimumRentals	23100000
CY2018	us-gaap	Operating Leases Rent Expense Minimum Rentals OperatingLeasesRentExpenseMinimumRentals	19600000
CY2019	us-gaap	Loss On Contract Termination LossOnContractTermination	18508000
CY2019	us-gaap	Severance Costs1 SeveranceCosts1	3361000
CY2019	skyw	Special Charges And Write Down Value Of Assets SpecialChargesAndWriteDownValueOfAssets	21869000
CY2019	us-gaap	Loss On Contract Termination LossOnContractTermination	18500000
CY2019	us-gaap	Severance Costs1 SeveranceCosts1	3400000
CY2020Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000
CY2020Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	6800000
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	10300000
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	13100000
CY2020	skyw	Severance Costs Gross SeveranceCostsGross	7900000
CY2020	us-gaap	Stock Granted During Period Value Sharebased Compensation Forfeited StockGrantedDuringPeriodValueSharebasedCompensationForfeited	4500000
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Award Requisite Service Period1 ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1	P90D
CY2020	skyw	Employee Stock Purchase Plan Maximum Ownership Percentage In Common Stock To Disqualify For Participation In Plan EmployeeStockPurchasePlanMaximumOwnershipPercentageInCommonStockToDisqualifyForParticipationInPlan	0.05
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Discount From Market Price Purchase Date ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPricePurchaseDate	0.05
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Maximum Employee Subscription Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate	0.15
CY2020	skyw	Share Based Compensation Arrangement By Share Based Payment Award Maximum Employee Subscription Amount ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionAmount	25000
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Discount From Market Price Purchase Date ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPricePurchaseDate	0.05
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Shares Purchased For Award ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward	65512
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Shares Purchased For Award ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward	65148
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Shares Purchased For Award ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward	60950
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Per Share Weighted Average Price Of Shares Purchased ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased	42.45
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Per Share Weighted Average Price Of Shares Purchased ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased	48.58
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Per Share Weighted Average Price Of Shares Purchased ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased	49.85
CY2020Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	-4403000
CY2020Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	74553000
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	6200000
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	9300000
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	13600000
CY2020Q4	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	250000000.0
CY2020Q4	us-gaap	Stock Repurchase Program Remaining Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased	139600000
CY2020	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	400000
CY2019	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	1700000
CY2018	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	1000000.0
CY2020	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	20000000.0
CY2019	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	94600000
CY2018	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	54400000
CY2020	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	51.87
CY2019	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	56.86
CY2018	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	56.25
CY2019Q1	skyw	Gain Loss On Sale Of Subsidiaries GainLossOnSaleOfSubsidiaries	46500000
CY2019Q1	us-gaap	Debt Instrument Interest Rate During Period DebtInstrumentInterestRateDuringPeriod	0.0685
CY2020	skyw	Number Of Spare Engines Sold To Joint Venture NumberOfSpareEnginesSoldToJointVenture	15
CY2020Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	729936000
CY2020Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	350039000
CY2020Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	457493000
CY2020Q4	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	589638000
CY2020	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	2127106000
CY2020Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	66321000
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.72
CY2020Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	-27669000
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	108802000
CY2020Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	29988000
CY2020Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-25715000
CY2020Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	33662000
CY2020Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-46450000
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-8515000
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.60
CY2020Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.51
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.67
CY2020Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.93
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.17
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.59
CY2020Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.51
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.66
CY2020Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.93
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.17
CY2020Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50277000
CY2020Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50140000
CY2020Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50181000
CY2020Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50181000
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50195000
CY2020Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	50559000
CY2020Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	50140000
CY2020Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	50622000
CY2020Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	50181000
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	50195000
CY2019Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	723694000
CY2019Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	744383000
CY2019Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	760295000
CY2019Q4	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	743591000
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	2971963000
CY2019Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	96419000
CY2019Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	144093000
CY2019Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	146441000
CY2019Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	125305000
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	512258000
CY2019Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	88181000
CY2019Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	88052000
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	91339000
CY2019Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	72527000
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	340099000
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.71
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.80
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.44
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.68
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.69
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.71
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.79
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.43
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.62
CY2019Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	51440000
CY2019Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	51145000
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50746000
CY2019Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50395000
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50932000
CY2019Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	52098000
CY2019Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	51477000
CY2019Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	51129000
CY2019Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	50796000
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	51375000
CY2019Q1	skyw	Gain Loss On Sale Of Subsidiaries GainLossOnSaleOfSubsidiaries	46500000
CY2019Q1	skyw	Special Charges And Write Down Value Of Assets SpecialChargesAndWriteDownValueOfAssets	21900000
CY2018Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	22299000
CY2019	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	6391000
CY2019Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	15908000
CY2017Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	17255000
CY2018	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	5044000
CY2018Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	22299000

Files In Submission

Name	View Source	Status
0001558370-21-001367-index-headers.html	Edgar Link	pending
0001558370-21-001367-index.html	Edgar Link	pending
0001558370-21-001367.txt	Edgar Link	pending
0001558370-21-001367-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
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R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending
skyw-20201231.xsd	Edgar Link	pending
skyw-20201231x10k.htm	Edgar Link	pending
skyw-20201231x10k002.jpg	Edgar Link	pending
skyw-20201231x10k_htm.xml	Edgar Link	completed
skyw-20201231xex10d19.htm	Edgar Link	pending
skyw-20201231xex10d23.htm	Edgar Link	pending
skyw-20201231xex10d24.htm	Edgar Link	pending
skyw-20201231xex10d25.htm	Edgar Link	pending
skyw-20201231xex21d1.htm	Edgar Link	pending
skyw-20201231xex23d1.htm	Edgar Link	pending
skyw-20201231xex31d1.htm	Edgar Link	pending
skyw-20201231xex31d2.htm	Edgar Link	pending
skyw-20201231xex32d1.htm	Edgar Link	pending
skyw-20201231xex32d2.htm	Edgar Link	pending
skyw-20201231xex4d6.htm	Edgar Link	pending
skyw-20201231_cal.xml	Edgar Link	unprocessable
skyw-20201231_def.xml	Edgar Link	unprocessable
skyw-20201231_lab.xml	Edgar Link	unprocessable
skyw-20201231_pre.xml	Edgar Link	unprocessable

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$SKYW
SKYWEST INC Stock $skyw

2020 Q4 Form 10-K Financial Statement

#000155837021001367 Filed on February 22, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SKYW SKYWEST INC Stock $skyw

2020 Q4 Form 10-K Financial Statement

#000155837021001367 Filed on February 22, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SKYW
SKYWEST INC Stock $skyw