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Commitments and Contingencies (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 01, 2011 | Jul. 02, 2011 | Oct. 02, 2010 | Oct. 01, 2011 | Oct. 02, 2010
Commitments and Contingencies [Abstract] |  |  |  |  |
Annual Executive Payment |  |  |  | $ 10,000 |
Royalty Payment Percentage (in hundredths) |  |  |  | 5.00% |
Executive Compensation Charge | $ 1,873 | $ 3,889 | $ 0 | $ 5,762 | $ 0

X
- Details
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Namespace Prefix: | us-gaap
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Annual amount owed to an executive employee through 2014. + Details
Name: | vsh_AnnualExecutivePayment
Namespace Prefix: | vsh
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Compensation expense recorded to recognize the acceleration of compensation components upon the termination of an executive employee. + Details
Name: | vsh_ExecutiveCompensationCharge
Namespace Prefix: | vsh
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The percentage of sales subject to royalty payments under previous executive employee employment agreement. + Details
Name: | vsh_RoyaltyPaymentPercentage
Namespace Prefix: | vsh
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration