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Schedule II - Valuation and Qualifying Accounts and Reserves (Details) - Valuation And Qualifying Accounts And Reserves (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 29, 2013
Dec. 30, 2012
Jan. 01, 2012
Allowance for Doubtful Accounts [Member]
      
Valuation Allowance [Line Items]      
Balance, at beginning of year $ 8,818 $ 8,920 $ 9,631
Charged to costs and expenses 253 [1] 1,338 [1] 1,454 [1]
Charged to other accounts 0 0 0
Deductions 1,425 [2] 1,440 [2] 2,165 [2]
Balance, at end of year 7,646 8,818 8,920
Business Restructuring Reserves [Member]
      
Valuation Allowance [Line Items]      
Balance, at beginning of year 4,350 4,112 521
Charged to costs and expenses 0 [1] 18,927 [1] 5,755 [1]
Charged to other accounts 0 [3] 9,364 [3] 776 [3]
Deductions 3,831 [4] 9,325 [4] 1,388 [4]
Balance, at end of year 519 4,350 4,112
Allowance for Sales Returns [Member]
      
Valuation Allowance [Line Items]      
Balance, at beginning of year 3,099 4,276 4,475
Charged to costs and expenses 1,360 [1] 1,441 [1] 1,887 [1]
Charged to other accounts 0 0 0
Deductions 888 [5] 2,618 [5] 2,086 [5]
Balance, at end of year 3,571 3,099 4,276
Warranty Reserves [Member]
      
Valuation Allowance [Line Items]      
Balance, at beginning of year 1,232 871 830
Charged to costs and expenses 446 [1] 361 [1] 41 [1]
Charged to other accounts 0 0 0
Deductions 314 [6] 0 [6] 0 [6]
Balance, at end of year 1,364 1,232 871
Inventory Valuation Reserve [Member]
      
Valuation Allowance [Line Items]      
Balance, at beginning of year 12,946 10,366 10,733
Charged to costs and expenses 3,445 [1] 4,252 [1] 2,644 [1]
Charged to other accounts 0 0 0
Deductions 2,975 [6] 1,672 [6] 3,011 [6]
Balance, at end of year $ 13,416 $ 12,946 $ 10,366
[1] Includes changes in foreign currency exchange rates.
[2] Write off of bad debt, and recovering of previously provided for amounts.
[3] Reduction of asset carrying value.
[4] Cash payments.
[5] Represents credits issued and adjustments to reflect actual exposure.
[6] Represents costs applied against reserve and adjustments to reflect actual exposure.