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Goodwill and Intangible Assets Goodwill and Indefinite-Lived Intangible Assets (Details) - USD ($)
$ in Thousands
9 Months Ended
Oct. 03, 2015
Sep. 27, 2014
Indefinite-lived Intangible Assets [Roll Forward]    
Indefinite-lived tradename/trademarks $ 1,396 $ 1,396
BAM Labs acquisition 0 0
Indefinite-lived tradename/trademarks 1,396 1,396
Goodwill [Roll Forward]    
Goodwill 8,963 8,963
BAM Labs acquisition 56,201 0
Goodwill $ 65,164 $ 8,963