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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. 28, 2014

Dec. 29, 2013

Dec. 30, 2012

Allowance for Doubtful Accounts [Member]

Year Ended:

Balance, at beginning of year

$ 7,646us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForDoubtfulAccountsMember

$ 8,818us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForDoubtfulAccountsMember

$ 8,920us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForDoubtfulAccountsMember

Charged to costs and expenses

(730)us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForDoubtfulAccountsMember

^[1]

253us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForDoubtfulAccountsMember

^[1]

1,338us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForDoubtfulAccountsMember

^[1]

Charged to other accounts

0us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForDoubtfulAccountsMember

0us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForDoubtfulAccountsMember

0us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForDoubtfulAccountsMember

Deductions

1,020us-gaap_ValuationAllowancesAndReservesDeductions
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForDoubtfulAccountsMember

^[2]

1,425us-gaap_ValuationAllowancesAndReservesDeductions
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForDoubtfulAccountsMember

^[2]

1,440us-gaap_ValuationAllowancesAndReservesDeductions
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForDoubtfulAccountsMember

^[2]

Balance, at end of year

7,936us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForDoubtfulAccountsMember

7,646us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForDoubtfulAccountsMember

8,818us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForDoubtfulAccountsMember

Business Restructuring Reserves [Member]

Year Ended:

Balance, at beginning of year

519us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_BusinessRestructuringReservesMember

4,350us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_BusinessRestructuringReservesMember

4,112us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_BusinessRestructuringReservesMember

Charged to costs and expenses

9,315us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_BusinessRestructuringReservesMember

^[1]

0us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_BusinessRestructuringReservesMember

^[1]

18,927us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_BusinessRestructuringReservesMember

^[1]

Charged to other accounts

2,717us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_BusinessRestructuringReservesMember

^[3]

0us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_BusinessRestructuringReservesMember

^[3]

9,364us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_BusinessRestructuringReservesMember

^[3]

Deductions

5,372us-gaap_ValuationAllowancesAndReservesDeductions
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_BusinessRestructuringReservesMember

^[4]

3,831us-gaap_ValuationAllowancesAndReservesDeductions
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_BusinessRestructuringReservesMember

^[4]

9,325us-gaap_ValuationAllowancesAndReservesDeductions
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_BusinessRestructuringReservesMember

^[4]

Balance, at end of year

7,179us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_BusinessRestructuringReservesMember

519us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_BusinessRestructuringReservesMember

4,350us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_BusinessRestructuringReservesMember

Allowance for Sales Returns [Member]

Year Ended:

Balance, at beginning of year

3,571us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForSalesReturnsMember

3,099us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForSalesReturnsMember

4,276us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForSalesReturnsMember

Charged to costs and expenses

63us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForSalesReturnsMember

^[1]

1,360us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForSalesReturnsMember

^[1]

1,441us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForSalesReturnsMember

^[1]

Charged to other accounts

0us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForSalesReturnsMember

0us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForSalesReturnsMember

0us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForSalesReturnsMember

Deductions

1,438us-gaap_ValuationAllowancesAndReservesDeductions
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForSalesReturnsMember

^[5]

888us-gaap_ValuationAllowancesAndReservesDeductions
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForSalesReturnsMember

^[5]

2,618us-gaap_ValuationAllowancesAndReservesDeductions
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForSalesReturnsMember

^[5]

Balance, at end of year

2,196us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForSalesReturnsMember

3,571us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForSalesReturnsMember

3,099us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_AllowanceForSalesReturnsMember

Warranty Reserves [Member]

Year Ended:

Balance, at beginning of year

1,364us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_WarrantyReservesMember

1,232us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_WarrantyReservesMember

871us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_WarrantyReservesMember

Charged to costs and expenses

394us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_WarrantyReservesMember

^[1]

446us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_WarrantyReservesMember

^[1]

361us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_WarrantyReservesMember

^[1]

Charged to other accounts

0us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_WarrantyReservesMember

0us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_WarrantyReservesMember

0us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_WarrantyReservesMember

Deductions

0us-gaap_ValuationAllowancesAndReservesDeductions
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_WarrantyReservesMember

^[6]

314us-gaap_ValuationAllowancesAndReservesDeductions
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_WarrantyReservesMember

^[6]

0us-gaap_ValuationAllowancesAndReservesDeductions
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_WarrantyReservesMember

^[6]

Balance, at end of year

1,758us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_WarrantyReservesMember

1,364us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_WarrantyReservesMember

1,232us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_WarrantyReservesMember

Inventory Valuation Reserve [Member]

Year Ended:

Balance, at beginning of year

13,416us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_InventoryValuationReserveMember

12,946us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_InventoryValuationReserveMember

10,366us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_InventoryValuationReserveMember

Charged to costs and expenses

4,819us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_InventoryValuationReserveMember

^[1]

3,445us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_InventoryValuationReserveMember

^[1]

4,252us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_InventoryValuationReserveMember

^[1]

Charged to other accounts

0us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_InventoryValuationReserveMember

0us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_InventoryValuationReserveMember

0us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_InventoryValuationReserveMember

Deductions

3,451us-gaap_ValuationAllowancesAndReservesDeductions
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_InventoryValuationReserveMember

^[6]

2,975us-gaap_ValuationAllowancesAndReservesDeductions
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_InventoryValuationReserveMember

^[6]

1,672us-gaap_ValuationAllowancesAndReservesDeductions
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_InventoryValuationReserveMember

^[6]

Balance, at end of year

$ 14,784us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_InventoryValuationReserveMember

$ 13,416us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_InventoryValuationReserveMember

$ 12,946us-gaap_ValuationAllowancesAndReservesBalance
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= us-gaap_InventoryValuationReserveMember

[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.

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Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690



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-Number 210

-Section 09

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690



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Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, charged to accounts other than costs and expenses in a given period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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+ References

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-Publisher FASB

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