Quarterly report pursuant to Section 13 or 15(d)

Borrowings - Additional Information (Detail)

v3.5.0.2
Borrowings - Additional Information (Detail)
 6 Months Ended
Jul. 02, 2016
USD ($)
May 06, 2016
USD ($)
May 05, 2016
USD ($)
Jan. 02, 2016
USD ($)
Line of Credit Facility [Line Items]        
Revolving loan payable $ 0     $ 11,759,000
Revolving Credit Facility        
Line of Credit Facility [Line Items]        
Event of default amount 0      
Principal payments due 0      
Jp Morgan Chase Bank | Revolving Credit Facility        
Line of Credit Facility [Line Items]        
Maximum borrowing capacity 30,000,000      
Revolving loan payable 0      
Outstanding letters of credit amount $ 5,283,000      
Unused credit commitment fee (percent) 0.25%      
Minimum availability required trigger amount (if less than) $ 3,600,000      
Number of days below minimum excess availability that triggers cash dominion period 5 days      
Number of consecutive days excess availability is above required amount 60 days      
Excess availability (greater than) $ 3,600,000      
Minimum availability required under availability block $ 2,400,000      
Minimum fixed charge ratio if less than minimum excess availability 1.0      
Excess availability under credit facility $ 16,000,000      
One-Month London Interbank Offered Rate (LIBOR) | Jp Morgan Chase Bank | Revolving Credit Facility        
Line of Credit Facility [Line Items]        
Applicable margin for LIBOR-based interest rate/ Applicable margin for alternate based rate (percent) 1.50%      
London Interbank Offered Rate (LIBOR) | Revolving Credit Facility        
Line of Credit Facility [Line Items]        
LIBOR based interest rate, principal $ 0      
Interest rate (percent) 2.00%      
Base Rate | Revolving Credit Facility        
Line of Credit Facility [Line Items]        
Interest rate (percent) 3.50%      
Prime based rate, principal $ 0      
Base Rate | Jp Morgan Chase Bank | Revolving Credit Facility        
Line of Credit Facility [Line Items]        
Applicable margin for LIBOR-based interest rate/ Applicable margin for alternate based rate (percent) 0.25%      
Maximum | Jp Morgan Chase Bank | Revolving Credit Facility        
Line of Credit Facility [Line Items]        
Line of credit facility exposure   $ 15,000,000 $ 6,000,000