Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity and Share-Based Compensation - Additional Information 2 (Detail)

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Stockholders' Equity and Share-Based Compensation - Additional Information 2 (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified
9 Months Ended
Sep. 28, 2013
Sep. 29, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted-average fair value of options granted $ 0.68 $ 2.65
Intrinsic value of the exercised options $ 4 $ 1,244
Unrecognized share-based compensation expense $ 2,865  
Weighted-average period of unrecognized share-based compensation expense 3 years 6 months 18 days  
2006 Equity Incentive Plan [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares available for future grants 0  
2007 Omnibus Plan [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Common stock authorized 2,400  
Maximum number of shares authorized to issued under condition one 1,500  
Maximum percentage of shares authorized to issued under condition one 5.00%  
Expiration period 10 years  
Option grant vesting period 4 years  
Exercise price of option grants 100.00%  
Shares available for future grants 3,180  
2007 New Employee Incentive Plan [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Common stock authorized 2,000  
Expiration period 10 years  
Option grant vesting period 4 years  
Exercise price of option grants 100.00%  
Shares available for future grants 1,552