XML 119 R103.htm IDEA: XBRL DOCUMENT v3.22.0.1

Benefit Plans - Summary of Defined Benefit Plan Amounts Recognized in Other Comprehensive Income (Loss) (Parenthetical) (Detail) $ in Thousands	Dec. 31, 2021 USD ($)
Retirement Benefits [Abstract]
Defined benefit plan amount to be amortized from accumulated other comprehensive income loss in the next twelve months	$ 21

X

- Definition

Defined benefit plan amount to be amortized from accumulated other comprehensive income loss in the next twelve months.

+ References

No definition available.

+ Details

Name:	hlly_DefinedBenefitPlanAmountToBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInTheNextTwelveMonths
Namespace Prefix:	hlly_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

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