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Warranty Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Warranty liability activity
Beginning balance	$ 15,421	$ 13,669	$ 13,500	$ 15,658
Settlements in cash or kind		(9,616)	(9,310)	(12,313)
Warranties issued and adjustments to preexisting warranties		11,368	9,435	10,155
Liabilities assumed in acquisition		0	44	0
Ending balance		$ 15,421	$ 13,669	$ 13,500
FOSSIL watch products
Product Information [Line Items]
Warranty period		11 years
RELIC watch products
Product Information [Line Items]
Warranty period		12 years
Other non-watch products | Minimum
Product Information [Line Items]
Warranty period		1 year
Other non-watch products | Maximum
Product Information [Line Items]
Warranty period		2 years
Scenario, Forecast [Member]
Product Information [Line Items]
Warranty period	2 years

X

- Definition

Represents the period of the standard product warranty.

+ References

No definition available.

+ Details

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X

- Definition

Warranties Issued And Adjustments To Preexisting Warranties.

+ References

No definition available.

+ Details

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X

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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- 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.

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X

- Definition

Amount as of the balance sheet date of the aggregate standard product warranty liability. Does not include the balance for the extended product warranty liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (c)(1),(c)(5)
-URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249

+ Details

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Period Type:	instant

X

- Definition

Amount of increase in the standard product warranty accrual from a business acquisition. Excludes extended product warranties.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249

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X

- Definition

Amount of decrease in the standard product warranty accrual from payments made in cash or in kind to satisfy claims under the terms of the standard product warranty. Excludes extended product warranties.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph ((c)(2))
-URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249

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- Details

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