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v3.20.2

Revenues - Additional Information (Detail) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Increase in net revenues |  |  | $ 9,962,000 |
Deferred Revenue, Revenue Recognized | $ 1,700,000 | $ 0 | $ 1,736,000 | $ 0

X
- Definition Amount of revenue recognized that was previously reported as deferred or unearned revenue. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Increase decrease in revenue. + References No definition available. + Details
Name: | vicr_IncreaseDecreaseInRevenue
Namespace Prefix: | vicr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration