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Balance Sheet Account Details (Details 6) (USD $)
In Thousands, unless otherwise specified
12 Months Ended 15 Months Ended
Dec. 30, 2012
Jan. 01, 2012
Dec. 30, 2012
Restructuring Cost and Reserve [Line Items]      
Restructuring reserve, beginning of period $ 3,526    
Additional expenses 3,522 8,136  
Cash Payments for Restructuring (7,048)    
Restructuring reserve, end of period 0 3,526 0
Cumulative expense recorded since inception in restructuring expense     11,658
Employee Severance Separation Cost [Member]
     
Restructuring Cost and Reserve [Line Items]      
Restructuring reserve, beginning of period 3,496    
Additional expenses 2,780    
Cash Payments for Restructuring (6,276)    
Restructuring reserve, end of period 0   0
Cumulative expense recorded since inception in restructuring expense     10,463
Facilities Exit Costs [Member]
     
Restructuring Cost and Reserve [Line Items]      
Restructuring reserve, beginning of period 0    
Additional expenses 221    
Cash Payments for Restructuring (221)    
Restructuring reserve, end of period 0   0
Cumulative expense recorded since inception in restructuring expense     221
Other Restructuring Costs [Member]
     
Restructuring Cost and Reserve [Line Items]      
Restructuring reserve, beginning of period 30    
Additional expenses 521    
Cash Payments for Restructuring (551)    
Restructuring reserve, end of period 0   0
Cumulative expense recorded since inception in restructuring expense     $ 974