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Valuation and Qualifying Accounts and Reserves (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 30, 2012
Jan. 01, 2012
Jan. 02, 2011
Restructuring Reserve [Member]
      
Valuation and Qualifying Accounts Disclosure [Line Items]      
BALANCE, AT BEGINNING OF YEAR $ 4,112 $ 521 $ 1,953
CHARGED TO COSTS AND EXPENSES 18,927 5,755 2,943
CHARGED TO OTHER ACCOUNTS 9,364 776 0
DEDUCTIONS 9,325 1,388 4,375
BALANCE, AT END OF YEAR 4,350 4,112 521
Reserves for Sales Returns and Allowances [Member]
      
Valuation and Qualifying Accounts Disclosure [Line Items]      
BALANCE, AT BEGINNING OF YEAR 4,276 4,475 3,334
CHARGED TO COSTS AND EXPENSES 1,441 1,887 3,195
CHARGED TO OTHER ACCOUNTS 0 0 0
DEDUCTIONS 2,618 2,086 2,054
BALANCE, AT END OF YEAR 3,099 4,276 4,475
Warranty Reserves [Member]
      
Valuation and Qualifying Accounts Disclosure [Line Items]      
BALANCE, AT BEGINNING OF YEAR 871 830 841
CHARGED TO COSTS AND EXPENSES 361 41 489
CHARGED TO OTHER ACCOUNTS 0 0 0
DEDUCTIONS 0 0 500
BALANCE, AT END OF YEAR 1,232 871 830
Inventory Reserve [Member]
      
Valuation and Qualifying Accounts Disclosure [Line Items]      
BALANCE, AT BEGINNING OF YEAR 10,366 10,733 13,044
CHARGED TO COSTS AND EXPENSES 4,252 2,644 3,391
CHARGED TO OTHER ACCOUNTS 0 0 0
DEDUCTIONS 1,672 3,011 5,702
BALANCE, AT END OF YEAR 12,946 10,366 10,733
Allowance for Doubtful Accounts [Member]
      
Valuation and Qualifying Accounts Disclosure [Line Items]      
BALANCE, AT BEGINNING OF YEAR 8,920 9,631 12,288
CHARGED TO COSTS AND EXPENSES 1,338 1,454 1,318
CHARGED TO OTHER ACCOUNTS 0 0 0
DEDUCTIONS 1,440 2,165 3,975
BALANCE, AT END OF YEAR $ 8,818 $ 8,920 $ 9,631