v3.10.0.1

Commitment and Contingencies (Details) - Tuscany	Nov. 30, 2017
Loss Contingencies [Line Items]
Ownership interest acquired (as a percent)	80.00%
Call option to acquire remaining interest (as a percent)	20.00%
Period to exercise put option	180 days

X

- Definition

Business Acquisition, Call Option To Acquire Remaining Voting Interests, Percentage

+ References

No definition available.

+ Details

Name:	foxf_BusinessAcquisitionCallOptionToAcquireRemainingVotingInterestsPercentage
Namespace Prefix:	foxf_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Business Acquisition, Period To Exercise Put Option

+ References

No definition available.

+ Details

Name:	foxf_BusinessAcquisitionPeriodToExercisePutOption
Namespace Prefix:	foxf_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
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

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

X

- Details

Name:	us-gaap_BusinessAcquisitionAxis=foxf_TuscanyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: