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Credit Facility (Details) (USD $)
In Millions, unless otherwise specified
9 Months Ended 9 Months Ended 9 Months Ended
Sep. 26, 2014
Revolving line of credit facility [Member]
Feb. 21, 2012
Revolving line of credit facility [Member]
Sep. 26, 2014
Term Loan [Member]
Feb. 21, 2012
Term Loan [Member]
Sep. 26, 2014
Revolving Line Of Credit Facility And Term Loan [Member]
Aug. 27, 2013
Revolving Line Of Credit Facility And Term Loan [Member]
Sep. 26, 2014
LIBOR Rate [Member]
Sep. 26, 2014
Base Rate [Member]
Mar. 21, 2012
2012 Tender Offer [Member]
Line of Credit Facility [Line Items]                  
Borrowing capacity under credit facility   $ 20.0   $ 30.0          
Credit facility amount outstanding 2.5   24.5            
Availability remaining 17.5   0            
Term of debt     5 years   5 years        
Stock repurchase cost of tender offer net of fees and expenses related to tender offer                 55.0
Additional borrowing capacity           $ 17.0      
Maturity date     Aug. 27, 2018   Aug. 27, 2018        
Margin percentage base rate             2.00% 1.00%