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Stock-Based Compensation and Employee Benefit Plans - Additional Information (Detail)					3 Months Ended		12 Months Ended
	Jun. 21, 2013 $ / shares shares	Jun. 17, 2013 Participant $ / shares shares	May. 14, 2013 $ / shares shares	Nov. 11, 2011 shares	Dec. 31, 2014 $ / shares shares	Jun. 30, 2013 USD ($)	Dec. 31, 2015 USD ($) $ / shares shares	Dec. 31, 2014 USD ($) $ / shares shares	Dec. 31, 2013 USD ($) $ / shares shares	Dec. 31, 2010 shares	Sep. 30, 2010 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term of Option							10 years
Eligible participants | Participant		638
Options to purchase shares of Common Stock | shares		1,531,077
Percentage of common stock		91.00%
Replacement option vesting period		5 years
Replacement option expiration period		10 years
Incremental expenses							$ 365,000
Total unrecognized compensation cost							318,000
Stock-based compensation expense							$ 1,782,000	$ 1,634,000	$ 2,450,000
Employee's compensation plan							The Company matches employee contributions to the plan at a rate of 50%, up to the first 3% of an employee's compensation.
Employee contributions							20.00%
Company contribution to the plan							$ 854,000	$ 877,000	$ 825,000
Performance Based Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-qualified stock options | shares							44,500
Time-Based eligible Option exercise price | $ / shares		$ 6.29
Total unrecognized compensation cost							$ 370,000
Stock-based compensation expense							$ 2,300,000
Time Based Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Time-Based eligible Option exercise price | $ / shares		$ 6.29
Tranche One [Member] | Performance Based Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-qualified stock options granted to non-employees		120.00%
Common stock sales price | $ / shares		$ 6.29
Tranche One [Member] | Time Based Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-qualified stock options granted to non-employees		120.00%
Tranche Two [Member] | Performance Based Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-qualified stock options granted to non-employees		140.00%
Common stock sales price | $ / shares		$ 7.34
Tranche Three [Member] | Performance Based Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-qualified stock options granted to non-employees		160.00%
Common stock sales price | $ / shares		$ 8.38
Tranche Four [Member] | Performance Based Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-qualified stock options granted to non-employees		180.00%
Common stock sales price | $ / shares		$ 9.43
Tranche Five [Member] | Performance Based Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-qualified stock options granted to non-employees		200.00%
Common stock sales price | $ / shares		$ 10.48
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employees pre-tax salary							1.00%
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employees pre-tax salary							80.00%
Two Thousand Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock reserved for issuance | shares							4,000,000
Non-qualified stock options | shares											1,243,750
Common stock options awarded | shares	70,552		150,000		150,355
Incremental expenses						$ 208,000
Total unrecognized compensation cost							$ 279,000
Immediate expense recognition						190,000
Exercise price of options awarded | $ / shares	$ 5.67		$ 5.35
Stock options, cancelled in period | shares					(129,028)
Two Thousand Plan [Member] | Employees and Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Incremental expenses						625,000
Age of employees							62 years 6 months
Immediate expense recognition						$ 450,000
Vicor Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-qualified stock options granted to non-employees							85.00%
Non-qualified stock options | shares					1,895,675		1,848,067	1,895,675
Common stock options awarded | shares							194,561
Common stock sales price | $ / shares							$ 12.51
Total unrecognized compensation cost							$ 1,393,000
Stock options, cancelled in period | shares							(117,085)
Vicor options actually vest							88.00%
Annual forfeiture rate							4.25%	8.00%	8.00%
Vicor options actually vest forfeiture								78.00%	78.00%
Share exercisable | shares					306,173		565,861	306,173	54,284
Weighted average exercise prices | $ / shares					$ 6.90		$ 7.24	$ 6.90	$ 9.72
Total Intrinsic value							$ 928,000	$ 751,000	$ 15,000
Options Exercised							805,000	788,000	13,000
Fair value of stock options that vested							$ 1,194,000	$ 1,096,000	$ 489,000
Compensation cost recognized over a weighted-average period							1 year 9 months 18 days
Expected recognized expenses, Year One							$ 726,000
Expected recognized expenses, Year Two							397,000
Expected recognized expenses, Year Three							186,000
Expected recognized expenses, Year Four							71,000
Expected recognized expenses, Year Five							$ 13,000
Weighted-average fair value | $ / shares							$ 6.76	$ 5.50	$ 1.90
Intrinsic value of option exercised							$ 1,269,000
2001 Picor Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock reserved for issuance | shares							20,000,000
Non-qualified stock options | shares					0			0
2007 VI Chip Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock reserved for issuance | shares							12,000,000
Non-qualified stock options | shares							0			2,984,250
Common stock options awarded | shares				0
Total unrecognized compensation cost							$ 485,000
Picor Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-qualified stock options | shares					9,870,067		9,725,067	9,870,067
Common stock options awarded | shares							82,000
Common stock sales price | $ / shares							$ 1.09
Total unrecognized compensation cost							$ 307,000
Stock options, cancelled in period | shares							(8,000)
Maturity period of US Treasury Bond							7 years
Annual forfeiture rate							2.50%	2.75%	2.75%
Picor options actually vest forfeiture							93.00%
Picor options actually vest								92.00%	92.00%
Share exercisable | shares					6,643,377		8,053,490	6,643,377	5,869,044
Weighted average exercise prices | $ / shares					$ 0.67		$ 0.64	$ 0.67	$ 0.69
Total Intrinsic value							$ 72,000	$ 0	$ 146,000
Options Exercised							14,000		14,000
Fair value of stock options that vested							$ 39,000	$ 0	$ 398,000
Compensation cost recognized over a weighted-average period							2 years 7 months 6 days
Expected recognized expenses, Year One							$ 148,000
Expected recognized expenses, Year Two							86,000
Expected recognized expenses, Year Three							51,000
Expected recognized expenses, Year Four							19,000
Expected recognized expenses, Year Five							$ 3,000
Weighted-average fair value | $ / shares							$ 0.48	$ 0.19	$ 0.31
Intrinsic value of option exercised							$ 3,594,000
Vi Chip Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-qualified stock options | shares					10,715,000		10,097,500	10,715,000
Common stock options awarded | shares							82,500
Common stock sales price | $ / shares							$ 1.00
Total unrecognized compensation cost							$ 589,000
Stock options, cancelled in period | shares							(699,000)
Maturity period of US Treasury Bond							7 years
Annual forfeiture rate							8.50%	7.75%	7.00%
Chip options actually vest								77.00%	80.00%
Chip options actually vest forfeiture							78.00%
Share exercisable | shares					7,377,950		7,042,600	7,377,950	7,267,600
Weighted average exercise prices | $ / shares					$ 1.00		$ 1.00	$ 1.00	$ 1.00
Options Exercised							$ 1,000	$ 0	$ 0
Compensation cost recognized over a weighted-average period							3 years
Expected recognized expenses, Year One							$ 192,000
Expected recognized expenses, Year Two							178,000
Expected recognized expenses, Year Three							150,000
Expected recognized expenses, Year Four							$ 69,000
Weighted-average fair value | $ / shares							$ 0.01	$ 0.02	$ 0.29
Intrinsic value of option exercised							$ 0
Stock Bonus Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock purchase by non-employees | shares							109,964

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Age of employees or directors.

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No definition available.

+ Details

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

X

- Definition

Chip options actually vest.

+ References

No definition available.

+ Details

Name:	vicr_ChipOptionsActuallyVest
Namespace Prefix:	vicr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Chip options actually vest forfeiture.

+ References

No definition available.

+ Details

Name:	vicr_ChipOptionsActuallyVestForfeiture
Namespace Prefix:	vicr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Employee service share based compensation awards compensation costs subject to immediate recognition due to age of recipient.

+ References

No definition available.

+ Details

Name:	vicr_EmployeeServiceShareBasedCompensationAwardsCompensationCostsSubjectToImmediateRecognitionDueToAgeOfRecipient
Namespace Prefix:	vicr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Employee service share based compensation non vested awards expected compensation cost recognized stock options year two.

+ References

No definition available.

+ Details

Name:	vicr_EmployeeServiceShareBasedCompensationNonVestedAwardsExpectedCompensationCostRecognizedStockOptionsYearTwo
Namespace Prefix:	vicr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Employee service share based compensation nonvested awards expected compensation cost recognized stock options year five.

+ References

No definition available.

+ Details

Name:	vicr_EmployeeServiceShareBasedCompensationNonvestedAwardsExpectedCompensationCostRecognizedStockOptionsYearFive
Namespace Prefix:	vicr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Employee service share based compensation nonvested awards expected compensation cost recognized stock options year four.

+ References

No definition available.

+ Details

Name:	vicr_EmployeeServiceShareBasedCompensationNonvestedAwardsExpectedCompensationCostRecognizedStockOptionsYearFour
Namespace Prefix:	vicr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Employee service share based compensation nonvested awards expected compensation cost recognized stock options year one.

+ References

No definition available.

+ Details

Name:	vicr_EmployeeServiceShareBasedCompensationNonvestedAwardsExpectedCompensationCostRecognizedStockOptionsYearOne
Namespace Prefix:	vicr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Employee service share based compensation nonvested awards expected compensation cost recognized stock options year three.

+ References

No definition available.

+ Details

Name:	vicr_EmployeeServiceShareBasedCompensationNonvestedAwardsExpectedCompensationCostRecognizedStockOptionsYearThree
Namespace Prefix:	vicr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Maturity period of treasury bond.

+ References

No definition available.

+ Details

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

X

- Definition

Number of eligible participants accepted option exchange offer.

+ References

No definition available.

+ Details

Name:	vicr_NumberOfEligibleParticipantsAcceptedOptionExchangeOffer
Namespace Prefix:	vicr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of shares exchanged under share exchange agreement.

+ References

No definition available.

+ Details

Name:	vicr_NumberOfSharesExchangedUnderShareExchangeAgreement
Namespace Prefix:	vicr_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of shares exchanged under share exchange agreement percentage.

+ References

No definition available.

+ Details

Name:	vicr_NumberOfSharesExchangedUnderShareExchangeAgreementPercentage
Namespace Prefix:	vicr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Picor options actually vest.

+ References

No definition available.

+ Details

Name:	vicr_PicorOptionsActuallyVest
Namespace Prefix:	vicr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Picor options actually vest forfeiture.

+ References

No definition available.

+ Details

Name:	vicr_PicorOptionsActuallyVestForfeiture
Namespace Prefix:	vicr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Share based compensation arrangement by share based payment award award vesting percentage.

+ References

No definition available.

+ Details

Name:	vicr_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPercentage
Namespace Prefix:	vicr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Share based compensation arrangement by share based payment award forfeiture rate.

+ References

No definition available.

+ Details

Name:	vicr_ShareBasedCompensationArrangementByShareBasedPaymentAwardForfeitureRate
Namespace Prefix:	vicr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Share based compensation arrangement by share based payment award options exercise price.

+ References

No definition available.

+ Details

Name:	vicr_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisePrice
Namespace Prefix:	vicr_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Share based compensation arrangement by share based payment award options grants in period exercise price.

+ References

No definition available.

+ Details

Name:	vicr_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodExercisePrice
Namespace Prefix:	vicr_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Share based compensation arrangement by share based payment award term of award.

+ References

No definition available.

+ Details

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

X

- Definition

Vicor options actually vest.

+ References

No definition available.

+ Details

Name:	vicr_VicorOptionsActuallyVest
Namespace Prefix:	vicr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_AwardTypeAxis=vicr_PerformanceBasedOptionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_AwardTypeAxis=vicr_TimeBasedOptionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_VestingAxis=vicr_TrancheOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_VestingAxis=vicr_TrancheTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_VestingAxis=vicr_TrancheThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_VestingAxis=vicr_TrancheFourMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_VestingAxis=vicr_TrancheFiveMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PlanNameAxis=vicr_TwoThousandPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_TitleOfIndividualAxis=vicr_EmployeesAndDirectorsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PlanNameAxis=vicr_VicorPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PlanNameAxis=vicr_TwoThousandOnePicorPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PlanNameAxis=vicr_TwoThousandSevenViChipPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PlanNameAxis=vicr_PicorPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PlanNameAxis=vicr_ViChipPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PlanNameAxis=vicr_StockBonusPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: