XML 70 R58.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Fair Value Measurements - Summary of key inputs into the monte carlo simulation model (Details) - Monte Carlo Simulation Model [Member] | Dec. 31, 2021 USD ($) yr
--- | ---
Earn Out Liability [Member] | Valuation date price |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Alternative Investment, Measurement Input | 12.99
Earn Out Liability [Member] | Expected term |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Alternative Investment, Measurement Input | yr | 6.54
Earn Out Liability [Member] | Expected volatility |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Alternative Investment, Measurement Input | 40.59
Earn Out Liability [Member] | Risk-free interest rate |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Alternative Investment, Measurement Input | 1.40
Earn Out Liability [Member] | Price Hurdle 1 [Member] |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Alternative Investment, Measurement Input | 13.00
Earn Out Liability [Member] | Price Hurdle 2 [Member] |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Alternative Investment, Measurement Input | 15.00
Private Warrants [Member | Valuation date price |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Alternative Investment, Measurement Input | 12.99
Private Warrants [Member | Strike price |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Alternative Investment, Measurement Input | 11.50
Private Warrants [Member | Expected term |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Alternative Investment, Measurement Input | yr | 4.54
Private Warrants [Member | Expected dividend |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Alternative Investment, Measurement Input |
Private Warrants [Member | Risk-free interest rate |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Alternative Investment, Measurement Input | 1.19
Private Warrants [Member | Price threshold |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Alternative Investment, Measurement Input | 18.00

X
- Definition Value of input used to measure alternative investment. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
Name: | us-gaap_AlternativeInvestmentMeasurementInput
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

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

X
- Details
Name: | us-gaap_ValuationTechniqueAxis=hlly_MonteCarloSimulationModelMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByLiabilityClassAxis=hlly_EarnOutLiabilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputSharePriceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputExpectedTermMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputPriceVolatilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputRiskFreeInterestRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=hlly_MeasurementInputPriceHurdleOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=hlly_MeasurementInputPriceHurdleTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=hlly_WarrantLiabilityPrivatePlacementWarrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=hlly_MeasurementInputStrikePriceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputExpectedDividendPaymentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=hlly_MeasurementInputPriceThresholdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |