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Segment and Geographic Data, Revenue and assets by geographic area (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2014 | Sep. 27, 2014 | Jun. 28, 2014 | Mar. 29, 2014 | Dec. 31, 2013 | Sep. 28, 2013 | Jun. 29, 2013 | Mar. 30, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net revenues | $ 610,764 us-gaap_Revenues | $ 638,211 us-gaap_Revenues | $ 641,929 us-gaap_Revenues | $ 602,378 us-gaap_Revenues | $ 616,170 us-gaap_Revenues | $ 602,890 us-gaap_Revenues | $ 597,665 us-gaap_Revenues | $ 554,254 us-gaap_Revenues | $ 2,493,282 us-gaap_Revenues | $ 2,370,979 us-gaap_Revenues | $ 2,230,097 us-gaap_Revenues
Property and equipment, net | 898,095 us-gaap_PropertyPlantAndEquipmentNet |  |  |  | 926,619 us-gaap_PropertyPlantAndEquipmentNet |  |  |  | 898,095 us-gaap_PropertyPlantAndEquipmentNet | 926,619 us-gaap_PropertyPlantAndEquipmentNet |
United States [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net revenues |  |  |  |  |  |  |  |  | 590,145 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = country_US | 591,082 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = country_US | 568,849 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = country_US
Property and equipment, net | 116,807 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = country_US |  |  |  | 123,812 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = country_US |  |  |  | 116,807 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = country_US | 123,812 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = country_US |
Germany [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net revenues |  |  |  |  |  |  |  |  | 821,005 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = country_DE | 800,733 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = country_DE | 775,204 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = country_DE
Property and equipment, net | 124,850 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = country_DE |  |  |  | 130,854 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = country_DE |  |  |  | 124,850 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = country_DE | 130,854 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = country_DE |
Czech Republic [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Property and equipment, net | 38,914 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = country_CZ |  |  |  | 47,002 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = country_CZ |  |  |  | 38,914 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = country_CZ | 47,002 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = country_CZ |
Other Europe [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net revenues |  |  |  |  |  |  |  |  | 107,598 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = vsh_SegmentGeographicalGroupsOfCountriesGroupFourMember | 89,348 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = vsh_SegmentGeographicalGroupsOfCountriesGroupFourMember | 61,236 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = vsh_SegmentGeographicalGroupsOfCountriesGroupFourMember
Property and equipment, net | 94,377 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = vsh_SegmentGeographicalGroupsOfCountriesGroupFourMember |  |  |  | 107,381 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = vsh_SegmentGeographicalGroupsOfCountriesGroupFourMember |  |  |  | 94,377 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = vsh_SegmentGeographicalGroupsOfCountriesGroupFourMember | 107,381 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = vsh_SegmentGeographicalGroupsOfCountriesGroupFourMember |
Israel [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net revenues |  |  |  |  |  |  |  |  | 13,871 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = country_IL | 13,319 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = country_IL | 14,708 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = country_IL
Property and equipment, net | 121,691 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = country_IL |  |  |  | 138,741 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = country_IL |  |  |  | 121,691 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = country_IL | 138,741 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = country_IL |
Asia [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net revenues |  |  |  |  |  |  |  |  | 960,663 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = vsh_SegmentGeographicalGroupsOfCountriesGroupSixMember | 876,497 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = vsh_SegmentGeographicalGroupsOfCountriesGroupSixMember | 810,100 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = vsh_SegmentGeographicalGroupsOfCountriesGroupSixMember
People's Republic of China [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Property and equipment, net | 176,671 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = country_CN |  |  |  | 172,274 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = country_CN |  |  |  | 176,671 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = country_CN | 172,274 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = country_CN |
Republic of China (Taiwan) [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Property and equipment, net | 127,354 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = country_TW |  |  |  | 120,368 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = country_TW |  |  |  | 127,354 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = country_TW | 120,368 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = country_TW |
Other Asia [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Property and equipment, net | 95,263 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = vsh_SegmentGeographicalGroupsOfCountriesGroupNineMember |  |  |  | 84,388 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = vsh_SegmentGeographicalGroupsOfCountriesGroupNineMember |  |  |  | 95,263 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = vsh_SegmentGeographicalGroupsOfCountriesGroupNineMember | 84,388 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = vsh_SegmentGeographicalGroupsOfCountriesGroupNineMember |
Other Geographic Area [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Property and equipment, net | $ 2,168 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = vsh_SegmentGeographicalGroupsOfCountriesGroupTenMember |  |  |  | $ 1,799 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = vsh_SegmentGeographicalGroupsOfCountriesGroupTenMember |  |  |  | $ 2,168 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = vsh_SegmentGeographicalGroupsOfCountriesGroupTenMember | $ 1,799 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = vsh_SegmentGeographicalGroupsOfCountriesGroupTenMember |

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