Condensed Consolidated Balance Sheets (Unaudited) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Dec. 30, 2012
Current assets:    
Cash and cash equivalents $ 205,535 $ 262,177
Short-term investments 99,751 51,720
Accounts receivable, net 112,865 106,864
Inventories 197,082 182,192
Deferred income taxes 8,644 8,699
Prepaid expenses and other current assets 36,609 28,531
Total current assets 660,486 640,183
Property, plant and equipment, net 174,369 176,728
Intangible assets, net 134,528 149,153
Goodwill 166,558 166,931
Other assets 33,627 39,171
Total assets 1,169,568 1,172,166
Current liabilities:    
Accounts payable 83,607 85,542
Accrued compensation and benefits 18,597 26,080
Other accrued liabilities 32,989 29,913
Income taxes payable 2,066 2,618
Deferred income 15,140 9,135
Current portion of long-term debt 4,887 5,382
Total current liabilities 157,286 158,670
Deferred income taxes 9,234 9,393
Long-term debt, less current portion 409,602 410,913
Other long-term liabilities 27,263 31,416
Total liabilities 603,385 610,392
Commitments and contingencies (Note 14)      
Capital stock:    
Preferred stock, $0.001 par value, 50,000,000 shares authorized, 0 shares issued and outstanding 0 0
Additional paid-in capital 708,645 690,891
Accumulated deficit (145,357) (127,691)
Accumulated other comprehensive income (loss) (Note 5) 2,836 (1,484)
Total stockholders' equity 566,183 561,774
Total liabilities and stockholders' equity 1,169,568 1,172,166
Common Class A [Member]
    
Capital stock:    
Common stock 59 58
Common Class B [Member]
    
Capital stock:    
Common stock $ 0 $ 0