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Other Current Assets (Details) - USD ($)
$ in Thousands
Dec. 30, 2017
Dec. 31, 2016
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]    
Prepaid expenses $ 17,073 $ 13,051
Royalties receivable 7,400 7,500
Employee loans and advances 364 305
Due from related party 39 77
Restricted cash(1) 33 2,081
Other current assets 3,161 3,053
Total other current assets 28,070 $ 26,067
Loss Contingency, Estimate of Possible Loss $ 10,500