Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Narrative) (Detail)

v2.4.0.6
Stock-Based Compensation (Narrative) (Detail) (USD $)
 3 Months Ended 6 Months Ended
Jun. 24, 2012
Jun. 26, 2011
Jun. 24, 2012
Jun. 26, 2011
Stock Based Compensation Activity [Line Items]        
Stock-based compensation $ 61,000 $ 114,000 $ 175,000 $ 175,000
Estimated fair value of the common stock, per share     $ 13.00  
Weighted-average grant date fair value of options granted     $ 5.28  
Total unrecognized compensation costs $ 755   $ 755  
Amended And Restated 2006 Stock Option Plan [Member]
        
Stock Based Compensation Activity [Line Items]        
Maximum term     10 years  
Amended And Restated 2006 Stock Option Plan [Member] | Options Granted on December Sixth Two Thousand and Six
        
Stock Based Compensation Activity [Line Items]        
Options granted on the third anniversary of the date of grant, percentage     60.00%  
Options granted on the fourth anniversary of the date of grant, percentage     20.00%  
Options granted on the fifth anniversary of the date of grant, percentage     20.00%  
Amended And Restated 2006 Stock Option Plan [Member] | Options Granted After December 6, 2006 [Member]
        
Stock Based Compensation Activity [Line Items]        
Options granted on the third anniversary of the date of grant, percentage     20.00%  
Options granted on the fourth anniversary of the date of grant, percentage     20.00%  
Options granted on the fifth anniversary of the date of grant, percentage     20.00%  
Options granted on the first anniversary of the date of grant, percentage     20.00%  
Options granted on the second anniversary of the date of grant, percentage     20.00%  
Amended And Restated 2006 Stock Option Plan [Member] | Pre Amended Plan [Member]
        
Stock Based Compensation Activity [Line Items]        
Common stock are reserved and available for issuance 1,004,957   1,004,957  
Amended And Restated 2006 Stock Option Plan [Member] | Amended Plan [Member]
        
Stock Based Compensation Activity [Line Items]        
Common stock are reserved and available for issuance 1,070,209   1,070,209  
2012 Omnibus Equity Incentive Plan [Member]
        
Stock Based Compensation Activity [Line Items]        
Common stock are reserved and available for issuance 1,250,000   1,250,000