XML 77 R65.htm IDEA: XBRL DOCUMENT
v3.23.2

Note 14 - Benefit Plans (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 02, 2023 | Jul. 03, 2022 | Jul. 02, 2023 | Jul. 03, 2022
Defined Contribution Pension [Member] |  |  |  |
Defined Contribution Plan, Employer Discretionary Contribution Amount |  | $ 150 |  | $ 150
The 401K [Member] |  |  |  |
Defined Contribution Plan, Employer Discretionary Contribution Amount | $ 565 | $ 1,156 | $ 1,140 | $ 1,844

X
- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_RetirementPlanNameAxis=hlly_DefinedContributionPensionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanNameAxis=hlly_The401kMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |