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Summary of Contributions by Major Customers to Total Revenues (Detail) - Customer Concentration Risk - Sales Revenue, Net
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Target      
Revenue, Major Customer [Line Items]      
Concentration Risk, Percentage 21.80% 29.30% 32.10%
Kohl's      
Revenue, Major Customer [Line Items]      
Concentration Risk, Percentage 18.10% 4.00%