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Product Warranties - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2016
Guarantees [Abstract]
Product warranty period	2 years

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- References

No definition available.

+ Details

Name:	us-gaap_GuaranteesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- Definition

Product warranty periods.

+ References

No definition available.

+ Details

Name:	vicr_ProductWarrantyPeriods
Namespace Prefix:	vicr_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration