Represents the cash balance held with the related party as of the balance sheet date.

No definition available.

Name:	skyw_RelatedPartyTransactionCashBalancesWithRelatedParty
Namespace Prefix:	skyw_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the number of aircraft under leveraged leases in which the related party is an equity participant.

+ References

No definition available.

+ Details

Name:	skyw_RelatedPartyTransactionEquityParticipationInLeveragedLeasesOnNumberOfAircraft
Namespace Prefix:	skyw_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the investment balance held with the related party as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	skyw_RelatedPartyTransactionInvestmentBalancesWithRelatedParty
Namespace Prefix:	skyw_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the number of refinanced aircraft of the entity.

+ References

No definition available.

+ Details

Name:	skyw_RelatedPartyTransactionNumberOfRefinancedAircraft
Namespace Prefix:	skyw_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the refinancing term.

+ References

No definition available.

+ Details

Name:	skyw_RelatedPartyTransactionRefinancingTerm
Namespace Prefix:	skyw_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- 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_RelatedPartyTransactionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Purchases during the period (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

+ References

No definition available.

+ Details

Name:	us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=skyw_ZionsBancorporationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AircraftTypeAxis=us-gaap_CRJ200Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AircraftTypeAxis=us-gaap_CRJ700Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_AffiliatedEntityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Related-Party Transactions (Details)	12 Months Ended
Related-Party Transactions (Details)	Dec. 31, 2016 USD ($) aircraft	Dec. 31, 2012 aircraft	Dec. 31, 2015 USD ($)
Zions Bancorporation
Related Party Transactions
Refinancing term		5 years
Cash balance with related party \| $	$ 116,000,000		$ 65,000,000
Investment balance with related party \| $	$ 121,600,000		$ 121,600,000
Zions Bancorporation \| CRJ 200
Related Party Transactions
Equity participation in leveraged leases on number of aircraft	1
Number of refinanced aircraft		5
Zions Bancorporation \| CRJ 700
Related Party Transactions
Equity participation in leveraged leases on number of aircraft	2
Number of refinanced aircraft		2
Affiliated entity
Related Party Transactions
Purchase from related party \| $	$ 244,540