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Restructuring Charges - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Jun. 27, 2014
Jun. 28, 2013
Facility
Dec. 28, 2012
Jun. 27, 2014
Restructuring Cost and Reserve [Line Items]        
Accretion of interest expense $ 10     $ 31
Number of consolidated assembly and integration facilities   2    
Restructuring charges   2,407    
Restructuring reserve   2,649    
Severance benefits     194  
Existing lease related liabilities
       
Restructuring Cost and Reserve [Line Items]        
Restructuring reserve   546    
Estimated present value of remaining lease payments
       
Restructuring Cost and Reserve [Line Items]        
Restructuring charges   2,103    
Reductions in carrying amounts of leasehold improvements
       
Restructuring Cost and Reserve [Line Items]        
Restructuring charges   $ 304