XML 92 R76.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Private Placement (Detail) - USD ($) | 4 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Dec. 31, 2020 | Jun. 30, 2021 | Oct. 09, 2021
Private Placement (Details) [Line Items] |  |  |
Purchase of warrants (in Shares) |  |  | 1
Warrant price per share |  |  | $ 11.50
Empower Ltd [Member] |  |  |
Private Placement (Details) [Line Items] |  |  |
Aggregate purchase price (in Dollars) | $ 7,000,000 | $ 7,000,000,000 |
Private Placement [Member] | Sponsor [Member] | Empower Ltd [Member] |  |  |
Private Placement (Details) [Line Items] |  |  |
Purchase of warrants (in Shares) | 4,666,667 | 4,666,667 |
Warrant price per share | $ 1.50 | $ 1.50 |
Class A Ordinary shares [Member] | Private Placement [Member] | Empower Ltd [Member] |  |  |
Private Placement (Details) [Line Items] |  |  |
Warrant price per share | $ 11.50 | $ 11.50 |

X
- References No definition available. + Details
Name: | hlly_PrivatePlacementDetailsLineItems
Namespace Prefix: | hlly_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21475-112644 + Details
Name: | us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares. + References No definition available. + Details
Name: | us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromIssuanceOfPrivatePlacement
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=hlly_EmpowerLtdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsidiarySaleOfStockAxis=us-gaap_PrivatePlacementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_OwnershipAxis=hlly_SponsorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |