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Long-Term Debt (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended
Dec. 29, 2012
Credit_Facilities
Aug. 01, 2011
Dec. 29, 2012
HCT [Member]
Sep. 27, 2011
HCT [Member]
Oct. 18, 2012
Seungwon Solutions Corporation [Member]
Dec. 29, 2012
Facility A [Member]
Dec. 29, 2012
Facility A [Member]
LIBOR [Member]
Dec. 29, 2012
Facility B [Member]
Dec. 29, 2012
Facility B [Member]
Maximum [Member]
Dec. 29, 2012
Facility B [Member]
Maximum [Member]
LIBOR [Member]
Dec. 29, 2012
Facility B [Member]
Maximum [Member]
Bank's Base Rate [Member]
Dec. 29, 2012
Facility B [Member]
Minimum [Member]
Dec. 29, 2012
Facility B [Member]
Minimum [Member]
LIBOR [Member]
Dec. 29, 2012
Facility B [Member]
Minimum [Member]
Bank's Base Rate [Member]
Dec. 29, 2012
Facility C [Member]
Dec. 29, 2012
Facility C [Member]
Maximum [Member]
Dec. 29, 2012
Facility C [Member]
Maximum [Member]
LIBOR [Member]
Dec. 29, 2012
Facility C [Member]
Maximum [Member]
Bank's Base Rate [Member]
Dec. 29, 2012
Facility C [Member]
Minimum [Member]
Dec. 29, 2012
Facility C [Member]
Minimum [Member]
LIBOR [Member]
Dec. 29, 2012
Facility C [Member]
Minimum [Member]
Bank's Base Rate [Member]
Dec. 29, 2012
Unsecured revolving line of credit facility [Member]
Facility A [Member]
Dec. 29, 2012
Secured revolving line of credit facility [Member]
Facility B [Member]
Dec. 29, 2012
Construction and term loan [Member]
Facility C [Member]
Long-Term Debt (Textual) [Abstract]                                                
Payments on credit facility                             Facility C requires monthly payments of interest for the first 24 months and monthly payments of principal plus accrued interest for 60 months                  
Credit facilities, maximum capacity   $ 50,000                                       $ 15,000 $ 35,000 $ 15,000
Debt instrument, variable LIBOR rate basis           30 days   30 days                               30 days
Variable interest rate     5.00%       1.45%     2.25% 0.00%   1.45% (0.25%)     2.45% 0.20%   1.65% (0.05%)      
Monthly payments of interest                             24 months                  
Monthly payments of principal plus accrued interest                             60 months                  
Amortization period (in years)                             15 years                  
Expiration date           Aug. 01, 2016   Aug. 01, 2016                                
Expiration period (in years)                             7 years                  
Debt covenant, Minimum Tangible Net Worth           92,000                                    
Debt covenant, annual increase of Minimum Tangible Net Worth as a percentage of Net Income           50.00%                                    
Debt covenant, Minimum EBITDA           5,000                                    
Funded debt to EBITDA                 3.0     1.0       3.0     1.0          
EBIT to Interest Expense ratio                 2.5     1.0       2.5     1.0          
Company acquired a line of credit       $ 100 $ 169                                      
Long-Term Debt (Additional Textual) [Abstract]                                                
Number of credit facilities 3                                              
Effective date Aug. 01, 2011