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Significant Accounting Policies (Narrative) (Detail) (USD $)
3 Months Ended 9 Months Ended 0 Months Ended 1 Months Ended 3 Months Ended
Sep. 29, 2012
Oct. 01, 2011
Mar. 31, 2012
Jul. 25, 2012
Number of Options/SARs Outstanding
Jan. 26, 2012
Number of Options/SARs Outstanding
Jul. 27, 2011
Number of Options/SARs Outstanding
Sep. 29, 2012
Number of Options/SARs Outstanding
Oct. 01, 2011
Number of Options/SARs Outstanding
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Income tax benefit likely of being realized upon ultimate settlement 50.00%              
Share-based compensation, grants in period       210,666 32,000 184,666    
Strike price ( in dollars per share)       $ 7.44 $ 6.30 $ 4.40    
Grant date weighted average fair market value (in dollars per share)       $ 3.71 $ 3.08 $ 2.20    
Expected life             3 years  
Weighted average remaining contractual term             5 years  
Stock-based compensation expense             $ 208,000 $ 146,000
Unrecognized share based compensation expense     $ 1,300,000          
Share Based Expense Recognition - Weighted-average period     2 years 1 month 13 days          
Options exercised in the period (Shares) 7,500 47,500