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Property and Equipment - Additional Information (Detail)
$ in Thousands
12 Months Ended
Jan. 26, 2016
ft²
Dec. 31, 2016
USD ($)
ft²
Jan. 02, 2016
USD ($)
ft²
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Number of Square Feet Purchased | ft²     90,000
Property, Plant and Equipment, Gross   $ 204,229 $ 197,938
Property, Plant and Equipment, Additions     8,500
Property Plant and Equipment, Occupied Square Feet | ft² 70,700 16,830  
Property, Plant and Equipment, Transfers and Changes   $ 6,400  
Accumulated amortization   68,233 65,472
Land      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross   23,762 23,738
Property, Plant and Equipment, Additions     700
Building and improvements      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross   85,966 78,877
Property, Plant and Equipment, Additions     5,700
Capital lease obligations      
Property, Plant and Equipment [Line Items]      
Furniture and office equipment, gross   400 400
Accumulated amortization   400 300
Research and Development Headquarters, Irvine, California [Member]      
Property, Plant and Equipment [Line Items]      
Interest Costs Capitalized   $ 100 400
CALIFORNIA | Construction in Progress [Member]      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross     4,000
CALIFORNIA | Accounts Payable [Member] | Construction in Progress [Member]      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross     $ 4,200