| | | | | | | | | | | | | | | | | | | | | |
<?xml version="1.0" encoding="windows-1252"?> |
<FilingSummary> |
| <Version> 3.22.2.2 </Version> |
| <ProcessingTime/> |
| <ReportFormat> html </ReportFormat> |
| <ContextCount> 1 </ContextCount> |
| <ElementCount> 19 </ElementCount> |
| <EntityCount> 1 </EntityCount> |
| <FootnotesReported> false </FootnotesReported> |
| <SegmentCount> 0 </SegmentCount> |
| <ScenarioCount> 0 </ScenarioCount> |
| <TuplesReported> false </TuplesReported> |
| <UnitCount> 0 </UnitCount> |
| <MyReports> |
| | <Report instance="algt-20220817.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R1.htm </HtmlFileName> |
| | | <LongName> 0001001 - Document - Cover Page Document </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www2.allegiantair.com/role/CoverPageDocument </Role> |
| | | <ShortName> Cover Page Document </ShortName> |
| | | <MenuCategory> Cover </MenuCategory> |
| | | <Position> 1 </Position> |
| | | </Report> |
| | <Report> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <LongName> All Reports </LongName> |
| | | <ReportType> Book </ReportType> |
| | | <ShortName> All Reports </ShortName> |
| | | </Report> |
| | </MyReports> |
| <Logs> |
| | <Log type="Warning"> [ix-0514-Hidden-Fact-Eligible-For-Transform] WARN: 2 fact(s) appearing in ix:hidden were eligible for transformation: dei:EntityAddressCityOrTown, dei:EntityAddressStateOrProvince - algt-20220817.htm 4 </Log> |
| | </Logs> |
| <InputFiles> |
| | <File doctype="8-K" original="algt-20220817.htm"> algt-20220817.htm </File> |
| | <File> algt-20220817.xsd </File> |
| | <File> algt-20220817_lab.xml </File> |
| | <File> algt-20220817_pre.xml </File> |
| | <File> indenturesecurednotesexe.htm </File> |
| | <File> revolvingcreditandguaran.htm </File> |
| | </InputFiles> |
| <SupplementalFiles> |
| | <File> algt-20220817_g1.jpg </File> |
| | </SupplementalFiles> |
| <BaseTaxonomies> |
| | <BaseTaxonomy items="21"> http://xbrl.sec.gov/dei/2022 </BaseTaxonomy> |
| | </BaseTaxonomies> |
| <HasPresentationLinkbase> true </HasPresentationLinkbase> |
| <HasCalculationLinkbase> false </HasCalculationLinkbase> |
| </FilingSummary> |