XML 72 R60.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Retirement Plans and Employee Stock Purchase Plans - Retirement Plans (Details) - SkyWest Plan - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Retirement Plans |  |  |
Required age for an employee to be eligible to participate in plan | 18 years |  |
Percentage of employer matching contribution based on length of service | 100.00% |  |
Minimum benefit plan percentage of participants compensation eligible for employer matching contribution based on position and years of service | 2.00% |  |
Maximum benefit plan percentage of participants compensation eligible for employer matching contribution based on position and years of service | 12.00% |  |
Company's combined contributions | $ 42.1 | $ 31.9 | $ 40.7

X
- Definition Represents the maximum percentage of the employer's matching contribution for participant contributions based upon the length of service. + References No definition available. + Details
Name: | skyw_DefinedBenefitPlanPercentageOfEmployerMatchingContributionForParticipantContributionsBasedUponLengthOfService
Namespace Prefix: | skyw_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the age required to be completed by the employee to be eligible to participate in the plan. + References No definition available. + Details
Name: | skyw_DefinedBenefitPlanRequiredAge
Namespace Prefix: | skyw_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the maximum benefit plan percentage of participants compensation eligible for employer matching contribution based on position and years of service. + References No definition available. + Details
Name: | skyw_MaximumBenefitPlanPercentageOfParticipantsCompensationEligibleForEmployerMatchingContributionBasedOnPositionAndYearsOfService
Namespace Prefix: | skyw_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the minimum benefit plan percentage of participants compensation eligible for employer matching contribution based on position and years of service. + References No definition available. + Details
Name: | skyw_MinimumBenefitPlanPercentageOfParticipantsCompensationEligibleForEmployerMatchingContributionBasedOnPositionAndYearsOfService
Namespace Prefix: | skyw_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of contribution received by defined benefit plan from employer which increases plan assets. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e2709-114920 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=123450688&loc=d3e4587-114921 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanContributionsByEmployer
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RetirementPlanNameAxis=skyw_SkyWestIncEmployeesRetirementPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |