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Major Customer, Segment and Geographic Information (Revenue for Each Class of Similar Products) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Net sales for each class of similar products
Percentage of Total	100.00%	100.00%	100.00%
Net sales	$ 2,217,712	$ 2,541,488	$ 2,788,163
Watches
Net sales for each class of similar products
Percentage of Total	81.30%	80.00%	78.90%
Net sales	$ 1,802,481	$ 2,033,021	$ 2,199,031
Leathers
Net sales for each class of similar products
Percentage of Total	10.80%	11.40%	11.70%
Net sales	$ 238,619	$ 289,385	$ 325,502
Jewelry
Net sales for each class of similar products
Percentage of Total	5.60%	6.60%	7.60%
Net sales	$ 123,177	$ 167,775	$ 211,694
Other
Net sales for each class of similar products
Percentage of Total	2.30%	2.00%	1.80%
Net sales	$ 53,435	$ 51,307	$ 51,936

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Percentage Of Product Revenue To Total Sales Revenue.

+ References

No definition available.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

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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.

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