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Concentrations (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Apparel Production [Member] |  |
Concentration Risk [Line Items] |  |
Concentration risk sourcing countries | 14 |
Footwear Production [Member] |  |
Concentration Risk [Line Items] |  |
Concentration risk sourcing countries | 3 |
Maximum [Member] |  |
Concentration Risk [Line Items] |  |
Remaining maturity of derivative contracts | 3 years |
Aggregate unrealized gain of derivative contracts with single counterparty | $ 7,000,000 |
United States [Member] | Credit Concentration Risk [Member] |  |
Concentration Risk [Line Items] |  |
Concentration percentage | 11.60% | 12.30%
Vietnam And China [Member] | Apparel [Member] | Supplier Concentration Risk [Member] |  |
Concentration Risk [Line Items] |  |
Concentration percentage | 61.00% |
China And Vietnam [Member] | Footwear | Supplier Concentration Risk [Member] |  |
Concentration Risk [Line Items] |  |
Concentration risk, geographic | substantially all |
Five Largest Apparel Factory Groups [Member] | Apparel [Member] | Supplier Concentration Risk [Member] |  |
Concentration Risk [Line Items] |  |
Concentration percentage | 32.00% |
Largest Apparel Factory Groups [Member] | Apparel [Member] | Supplier Concentration Risk [Member] |  |
Concentration Risk [Line Items] |  |
Concentration percentage | 11.00% |
Five Largest Footwear Factory Groups [Member] | Footwear | Supplier Concentration Risk [Member] |  |
Concentration Risk [Line Items] |  |
Concentration percentage | 80.00% |
Largest Footwear Factory Groups [Member] | Footwear | Supplier Concentration Risk [Member] |  |
Concentration Risk [Line Items] |  |
Concentration percentage | 38.00% |

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