XML 72 R60.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Fair Value Measurements (Additional Information) (Details) $ in Thousands | Dec. 31, 2020 USD ($)
--- | ---
Level 3 [Member] |
Fair Value Liabilities Measured On Recurring Basis [Line Items] |
Contingent Consideration Payable | $ 9,200

X
- Definition Fair Value Liabilities Measured On Recurring Basis [Line Items] + References No definition available. + Details
Name: | hlly_FairValueLiabilitiesMeasuredOnRecurringBasisLineItems
Namespace Prefix: | hlly_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled within one year or the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 35 -Paragraph 1 -Subparagraph b -URI http://asc.fasb.org/extlink&oid=116859824&loc=d3e6819-128478 + Details
Name: | us-gaap_BusinessCombinationContingentConsiderationLiabilityCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |