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Goodwill - Schedule of Reconciliation of Activity for Goodwill (Detail) - USD ($)
$ in Thousands
3 Months Ended
Apr. 02, 2017
Apr. 03, 2016
Goodwill And Intangible Assets Disclosure [Abstract]    
Goodwill, Beginning Balance $ 144,586 $ 117,954
Goodwill, Expansion Transactions 4,849 16,935
Goodwill, Measurement period adjustment (52) 422
Goodwill, Ending Balance $ 149,383 $ 135,311