XML 94 R69.htm IDEA: XBRL DOCUMENT
v3.25.2

Commitments and Contingencies - Additional Information (Detail) - Forward Purchase Contract [Member] - USD ($) | Jul. 31, 2021 | Feb. 28, 2021
--- | --- | ---
Heart Aerospace Incorporated [Member] | Maximum [Member] |  |
Purchase Commitment Excluding Longterm Commitment [Line Items] |  |
Purchase commitment amount | $ 1,200,000,000 |
eVTOL Aircraft [Member] | Archer Aviation, Inc. [Member] |  |
Purchase Commitment Excluding Longterm Commitment [Line Items] |  |
Purchase commitment amount |  | $ 200,000,000

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

X
- Definition Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier. + References No definition available. + Details
Name: | us-gaap_PurchaseObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=mesa_ForwardPurchaseContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mesa_HeartAerospaceIncorporatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=mesa_EVTOLAircraftMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mesa_ArcherAviationIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |