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SEGMENT INFORMATION (Schedule of Net Sales for Each Class of Similar Products) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2018 | Jul. 01, 2017 | Jun. 30, 2018 | Jul. 01, 2017
Net sales for each class of similar products |  |  |  |
Net sales | $ 576,583 | $ 596,846 | $ 1,145,739 | $ 1,178,636
Percentage of Total | 100.00% | 100.00% | 100.00% | 100.00%
Watches |  |  |  |
Net sales for each class of similar products |  |  |  |
Net sales | $ 462,990 | $ 469,461 | $ 910,605 | $ 919,231
Percentage of Total | 80.30% | 78.60% | 79.50% | 78.00%
Leathers |  |  |  |
Net sales for each class of similar products |  |  |  |
Net sales | $ 67,920 | $ 69,597 | $ 137,179 | $ 142,286
Percentage of Total | 11.80% | 11.70% | 12.00% | 12.10%
Jewelry |  |  |  |
Net sales for each class of similar products |  |  |  |
Net sales | $ 33,104 | $ 44,285 | $ 74,909 | $ 92,171
Percentage of Total | 5.70% | 7.40% | 6.50% | 7.80%
Other |  |  |  |
Net sales for each class of similar products |  |  |  |
Net sales | $ 12,569 | $ 13,503 | $ 23,046 | $ 24,948
Percentage of Total | 2.20% | 2.30% | 2.00% | 2.10%

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