Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt (Details)

v2.4.0.6
Long-Term Debt (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 30, 2013
CreditFacility
Mar. 31, 2012
Aug. 01, 2011
Long-Term Debt (Textual) [Abstract]      
Credit facilities, maximum capacity     $ 50,000
Long-Term Debt (Additional Textual) [Abstract]      
Number of credit facilities 3    
Effective date Aug. 01, 2011    
Line of Credit Amortization 0 0  
Facility A [Member]
     
Long-Term Debt (Textual) [Abstract]      
Debt instrument, variable LIBOR rate basis 30 days    
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    
Expiration date Aug. 01, 2016    
Facility A [Member] | LIBOR [Member]
     
Long-Term Debt (Textual) [Abstract]      
Variable interest rate 1.45%    
Facility B [Member]
     
Long-Term Debt (Textual) [Abstract]      
Debt instrument, variable LIBOR rate basis 30 days    
Expiration date Aug. 01, 2016    
Facility B [Member] | Maximum [Member]
     
Long-Term Debt (Textual) [Abstract]      
Funded debt to EBITDA 3.0    
EBIT to Interest Expense ratio 2.5    
Facility B [Member] | Maximum [Member] | LIBOR [Member]
     
Long-Term Debt (Textual) [Abstract]      
Variable interest rate 2.25%    
Facility B [Member] | Maximum [Member] | Bank's Base Rate [Member]
     
Long-Term Debt (Textual) [Abstract]      
Variable interest rate 0.00%    
Facility B [Member] | Minimum [Member]
     
Long-Term Debt (Textual) [Abstract]      
Funded debt to EBITDA 1.0    
EBIT to Interest Expense ratio 1.0    
Facility B [Member] | Minimum [Member] | LIBOR [Member]
     
Long-Term Debt (Textual) [Abstract]      
Variable interest rate 1.45%    
Facility B [Member] | Minimum [Member] | Bank's Base Rate [Member]
     
Long-Term Debt (Textual) [Abstract]      
Variable interest rate (0.25%)    
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    
Monthly payments of interest 24 months    
Monthly payments of principal plus accrued interest 60 months    
Amortization period (in years) 15 years    
Expiration period (in years) 7 years    
Facility C [Member] | Maximum [Member]
     
Long-Term Debt (Textual) [Abstract]      
Funded debt to EBITDA 3.0    
EBIT to Interest Expense ratio 2.5    
Facility C [Member] | Maximum [Member] | LIBOR [Member]
     
Long-Term Debt (Textual) [Abstract]      
Variable interest rate 2.45%    
Facility C [Member] | Maximum [Member] | Bank's Base Rate [Member]
     
Long-Term Debt (Textual) [Abstract]      
Variable interest rate 0.20%    
Facility C [Member] | Minimum [Member]
     
Long-Term Debt (Textual) [Abstract]      
Funded debt to EBITDA 1.0    
EBIT to Interest Expense ratio 1.0    
Facility C [Member] | Minimum [Member] | LIBOR [Member]
     
Long-Term Debt (Textual) [Abstract]      
Variable interest rate 1.65%    
Facility C [Member] | Minimum [Member] | Bank's Base Rate [Member]
     
Long-Term Debt (Textual) [Abstract]      
Variable interest rate (0.05%)    
Unsecured revolving line of credit facility [Member] | Facility A [Member]
     
Long-Term Debt (Textual) [Abstract]      
Credit facilities, maximum capacity 15,000    
Secured revolving line of credit facility [Member] | Facility B [Member]
     
Long-Term Debt (Textual) [Abstract]      
Credit facilities, maximum capacity 35,000    
Construction and term loan [Member] | Facility C [Member]
     
Long-Term Debt (Textual) [Abstract]      
Credit facilities, maximum capacity $ 15,000    
Debt instrument, variable LIBOR rate basis 30 days