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Income Taxes - Reconciliation of Total Amounts of Unrecognized Tax Benefits (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Jan. 02, 2016
Jan. 03, 2015
Income Tax Disclosure [Abstract]      
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense $ 100 $ 200 $ 100
Tax Adjustments, Settlements, and Unusual Provisions (277) 0  
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]      
Unrecognized tax benefits (gross), beginning of period 8,875 8,024  
Increase from tax positions in prior period 143 131  
Increase from tax positions in current period 6,437 1,616  
Settlements (296) 0  
Lapse of statute of limitations (388) (896)  
Unrecognized tax benefits (gross), end of period $ 14,494 $ 8,875 $ 8,024