XML 80 R66.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Current Vulnerability Due to Certain Concentrations (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Concentration Risks [Abstract] |  |
Duration of business operations in Israel (in years) | P48Y |
Credit Concentration Risk [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | MUFG Bank Ltd. [Member] |  |
Concentration Risks [Abstract] |  |
Concentration risk percentage (in hundredths) | 18.50% |
Credit Concentration Risk [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | JPMorgan [Member] |  |
Concentration Risks [Abstract] |  |
Concentration risk percentage (in hundredths) | 11.70% |
Credit Concentration Risk [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | HSBC [Member] |  |
Concentration Risks [Abstract] |  |
Concentration risk percentage (in hundredths) | 12.50% |
Geographic Concentration [Member] | Outside Of United States [Member] |  |
Concentration Risks [Abstract] |  |
Cash and cash equivalents and short-term investments | $ 686,284 |
Geographic Concentration [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | United States [Member] |  |
Concentration Risks [Abstract] |  |
Concentration risk percentage (in hundredths) | 14.90% |
Geographic Concentration [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | Germany [Member] |  |
Concentration Risks [Abstract] |  |
Concentration risk percentage (in hundredths) | 20.60% |
Geographic Concentration [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | Other Europe [Member] |  |
Concentration Risks [Abstract] |  |
Concentration risk percentage (in hundredths) | 2.40% |
Geographic Concentration [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | Israel [Member] |  |
Concentration Risks [Abstract] |  |
Concentration risk percentage (in hundredths) | 16.40% |
Geographic Concentration [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | People's Republic Of China [Member] |  |
Concentration Risks [Abstract] |  |
Concentration risk percentage (in hundredths) | 9.90% |
Geographic Concentration [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | Other Asia [Member] |  |
Concentration Risks [Abstract] |  |
Concentration risk percentage (in hundredths) | 3.00% |
Geographic Concentration [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | Other [Member] |  |
Concentration Risks [Abstract] |  |
Concentration risk percentage (in hundredths) | 1.40% |
Geographic Concentration [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | Singapore [Member] |  |
Concentration Risks [Abstract] |  |
Concentration risk percentage (in hundredths) | 20.40% |
Geographic Concentration [Member] | Cash and Cash Equivalents and Short-term Investments [Member] | The Republic of China (Taiwan) [Member] |  |
Concentration Risks [Abstract] |  |
Concentration risk percentage (in hundredths) | 11.00% |
Geographic Concentration [Member] | Revenue [Member] | Outside Of United States [Member] |  |
Concentration Risks [Abstract] |  |
Concentration risk percentage (in hundredths) | 75.00% |
Customer Concentration Risk [Member] | Revenue [Member] |  |
Concentration Risks [Abstract] |  |
Concentration risk percentage (in hundredths) | 10.40% |
Customer Concentration Risk [Member] | Accounts Receivable [Member] |  |
Concentration Risks [Abstract] |  |
Concentration risk percentage (in hundredths) | 15.90% | 16.10%

X
- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13531-108611 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13537-108611 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592 + Details
Name: | us-gaap_ConcentrationRiskPercentage1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | vsh_CashAndCashEquivalentsAndShortTermInvestments
Namespace Prefix: | vsh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The number of years that the business operation in Israel has existed. + References No definition available. + Details
Name: | vsh_DurationOfBusinessOperationsInIsrael
Namespace Prefix: | vsh_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | vsh_MarketConcentrationsAbstract
Namespace Prefix: | vsh_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CreditConcentrationRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=vsh_CashAndCashEquivalentsAndShortTermInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=vsh_BankTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=vsh_BankThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=vsh_BankFiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByTypeAxis=us-gaap_GeographicConcentrationRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=vsh_OutsideOfUnitedStatesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=country_US
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=country_DE
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=vsh_OtherEuropeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=country_IL
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=country_CN
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=vsh_OtherAsiaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=vsh_OtherGeographicAreaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=country_SG
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=country_TW
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_SalesRevenueGoodsNetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CustomerConcentrationRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_AccountsReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |