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Equity-Based Compensation - Summary of Restricted Stock Award Activity (Detail) - Restricted Stock Awards [Member]
9 Months Ended
Oct. 03, 2015
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Shares, Outstanding at beginning of year 691,621
Shares, Granted 183,345
Shares, Released (246,673)
Shares, Forfeited (41,136)
Shares, Outstanding at end of period 587,157
Weighted-Average Grant Date Fair Value, Outstanding at beginning of year | $ / shares $ 60.06
Weighted-Average Grant Date Fair Value, Granted | $ / shares 107.84
Weighted-Average Grant Date Fair Value, Released | $ / shares 51.69
Weighted-Average Grant Date Fair Value, Forfeited | $ / shares 72.98
Weighted-Average Grant Date Fair Value, Outstanding at end of period | $ / shares $ 77.63