XML 103 R91.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Acquisition, restructuring and management fee costs - Additional Information (Details) - Sentinel Capital Partners [Member] $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 USD ($)
Business Acquisition [Line Items] |
Acquisition costs and management fees | $ 23,275
Selling, General and Administrative Expenses [Member] |
Business Acquisition [Line Items] |
Director Compensation | $ 90

X
- Definition Acquisition Costs and Management Fees + References No definition available. + Details
Name: | hlly_AcquisitionCostsAndManagementFees
Namespace Prefix: | hlly_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Director Compensation + References No definition available. + Details
Name: | hlly_DirectorCompensation
Namespace Prefix: | hlly_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

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

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_SellingGeneralAndAdministrativeExpensesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |