XML 67 R51.htm IDEA: XBRL DOCUMENT
v3.20.4

Short-Term and Long-Term Investments - Amortized Cost and Estimated Fair Value of Available-for-Sale Securities by Contractual Maturities (Detail) $ in Thousands | Dec. 31, 2020 USD ($)
--- | ---
Schedule of Available-for-sale Securities [Line Items] |
Debt Securities, Available-for-sale, Amortized Cost | $ 70,172
Available For Sale Debt Securities Estimated Fair Value | 70,164
Failed Auction Security [Member] |
Schedule of Available-for-sale Securities [Line Items] |
Due in twenty to forty years, Cost | 3,000
Due in twenty to forty years, Estimated Fair Value | 2,517
US Treasury Obligations [Member] |
Schedule of Available-for-sale Securities [Line Items] |
Maturities greater than three months but less than one year, Cost | 50,174
Maturities greater than three months but less than one year, Estimated Fair Value | 50,166
Maturities less than three months, Cost | 19,998
Maturities less than three months, Estimated Fair Value | $ 19,998

X
- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27161-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121558606&loc=SL82898722-210454 + Details
Name: | us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Available for sale debt securities estimated fair value. + References No definition available. + Details
Name: | vicr_AvailableForSaleDebtSecuritiesEstimatedFairValue
Namespace Prefix: | vicr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Available For Sale Securities Debt Maturities Greater Than Three Months But Less Than One Year Amortized Cost Basis. + References No definition available. + Details
Name: | vicr_AvailableForSaleSecuritiesDebtMaturitiesGreaterThanThreeMonthsButLessThanOneYearAmortizedCostBasis
Namespace Prefix: | vicr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Available For Sale Securities Debt Maturities Greater Than Three Months But Less Than One Year Fair Value. + References No definition available. + Details
Name: | vicr_AvailableForSaleSecuritiesDebtMaturitiesGreaterThanThreeMonthsButLessThanOneYearFairValue
Namespace Prefix: | vicr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Available for sale securities debt maturities less than three months amortized cost basis. + References No definition available. + Details
Name: | vicr_AvailableForSaleSecuritiesDebtMaturitiesLessThanThreeMonthsAmortizedCostBasis
Namespace Prefix: | vicr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Available for sale securities debt maturities less than three months fair value. + References No definition available. + Details
Name: | vicr_AvailableForSaleSecuritiesDebtMaturitiesLessThanThreeMonthsFairValue
Namespace Prefix: | vicr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Available for sale securities debt maturities year twenty six amortized cost basis. + References No definition available. + Details
Name: | vicr_AvailableForSaleSecuritiesDebtMaturitiesYearTwentySixAmortizedCostBasis
Namespace Prefix: | vicr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Available for sale securities debt maturities year twenty six fair value. + References No definition available. + Details
Name: | vicr_AvailableForSaleSecuritiesDebtMaturitiesYearTwentySixFairValue
Namespace Prefix: | vicr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_AuctionRateSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_USTreasurySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |