v2.4.0.6
Debt (Details Textual) (USD $)
9 Months Ended 12 Months Ended
Jun. 29, 2012
Sep. 30, 2011
Debt (Textual) [Abstract]    
Revolving credit facility   $ 125,000,000
Revolving credit facility maturity date   Sep. 01, 2016
Revolving credit facility interest date Borrowings under the revolving credit facility bear either a variable interest rate equal to (i) the greater of the lender’s prime rate, the federal funds effective rate plus 0.5%, or an adjusted LIBOR plus 1.0%, in each case plus either an additional 1.25%, 1.50% or 1.75%, subject to certain conditions, or (ii) an adjusted LIBOR rate plus either 2.25%, 2.50% or 2.75%, subject to certain conditions.  
Revolving credit facility, LIBOR rate adjusted LIBOR plus 1.0%  
Revolving credit facility federal funds effective rate federal funds effective rate plus 0.5%  
Federal funds effective rate 0.50%  
LIBOR rate 1.00%  
Outstanding borrowings under the revolving credit facility $ 0 $ 0
Interest Rate LIBOR One [Member]
   
Line of Credit Facility [Line Items]    
Adjusted LIBOR rate percentage 1.25%  
Interest Rate LIBOR Two [Member]
   
Line of Credit Facility [Line Items]    
Adjusted LIBOR rate percentage 1.50%  
Interest Rate LIBOR Three [Member]
   
Line of Credit Facility [Line Items]    
Adjusted LIBOR rate percentage 1.75%  
Interest Rate LIBOR Four [Member]
   
Line of Credit Facility [Line Items]    
Adjusted LIBOR rate percentage 2.25%  
Interest Rate LIBOR Five [Member]
   
Line of Credit Facility [Line Items]    
Adjusted LIBOR rate percentage 2.50%  
Interest Rate Libor Six [Member]
   
Line of Credit Facility [Line Items]    
Adjusted LIBOR rate percentage 2.75%