Quarterly report pursuant to Section 13 or 15(d)

Property and Equipment, Net (Details Textual)

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Property and Equipment, Net (Details Textual) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 30, 2013
Mar. 31, 2012
Dec. 29, 2012
Property Plant and Equipment (Textual) [Abstract]      
Property and equipment, net $ 27,123   $ 28,559
Property Plant and Equipment (Additional Textual) [Abstract]      
Depreciation and amortization expense 3,638 3,747  
Leasehold improvements [Member]
     
Property Plant and Equipment (Textual) [Abstract]      
Description of estimated useful life of property and equipment The estimated useful life is the lesser of 3-5 years or the lease term.    
Leasehold improvements [Member] | Maximum [Member]
     
Property Plant and Equipment (Textual) [Abstract]      
Estimated useful life of property and equipment 5 years    
Leasehold improvements [Member] | Minimum [Member]
     
Property Plant and Equipment (Textual) [Abstract]      
Estimated useful life of property and equipment 3 years    
Philippines [Member]
     
Property Plant and Equipment (Textual) [Abstract]      
Property and equipment, net $ 900   $ 1,000