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 $)
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jul. 02, 2011
Jun. 30, 2012
Jul. 02, 2011
Dec. 31, 2011
Property, Plant and Equipment [Line Items]          
Property and equipment, net $ 32,872,000   $ 32,872,000   $ 34,627,000
Depreciation expense 4,000,000 3,100,000 7,700,000 6,100,000  
Leasehold improvements [Member]
         
Property, Plant and Equipment [Line Items]          
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 [Line Items]          
Estimated useful life of property and equipment     5 years    
Leasehold improvements [Member] | Minimum [Member]
         
Property, Plant and Equipment [Line Items]          
Estimated useful life of property and equipment     3 years    
Philippines [Member]
         
Property, Plant and Equipment [Line Items]          
Property and equipment, net $ 1,300,000   $ 1,300,000   $ 1,600,000