Annual report pursuant to Section 13 and 15(d)

Deferred Compensation Plan - Additional Information (Detail)

v3.8.0.1
Deferred Compensation Plan - Additional Information (Detail) - USD ($)
12 Months Ended
Dec. 30, 2017
Dec. 31, 2016
Dec. 31, 2015
Investments And Employee Deferred Compensation Plan [Line Items]      
Percentage of deferred salary and commissions (up to) 25.00%    
Percentage of bonuses (up to) 100.00%    
Percentage of deferred matching contribution amount 25.00%    
Vesting schedule 5 years    
Restricted investments $ 752,000 $ 271,000  
Distributions from the deferred compensation plan aggregated 289,000 $ 719,000 $ 678,000
Maximum      
Investments And Employee Deferred Compensation Plan [Line Items]      
Matching contribution on deferred amount (up to) $ 10,000