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Stockholders' Equity - Additional information (Detail) (USD $)	0 Months Ended		12 Months Ended
	Apr. 22, 2013	Mar. 07, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Nov. 30, 2000
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares accepted	1,341,575us-gaap_StockRepurchasedDuringPeriodShares	1,931,513us-gaap_StockRepurchasedDuringPeriodShares	0us-gaap_StockRepurchasedDuringPeriodShares	0us-gaap_StockRepurchasedDuringPeriodShares	0us-gaap_StockRepurchasedDuringPeriodShares
Aggregate consideration for Common Stock	$ 6,708,000us-gaap_StockRepurchasedDuringPeriodValue	$ 10,392,000us-gaap_StockRepurchasedDuringPeriodValue
Tender offer expiration date			Apr. 22, 2013
Common Stock repurchased as per November plan						30,000,000us-gaap_StockRepurchaseProgramAuthorizedAmount1
Stock repurchase program amount available			8,541,000us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	8,541,000us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1
Cash dividends paid to the Company			3,738,000us-gaap_CashDividendsPaidToParentCompany	1,569,000us-gaap_CashDividendsPaidToParentCompany	1,222,000us-gaap_CashDividendsPaidToParentCompany
Cash dividends paid to outside shareholders			162,000us-gaap_PaymentsOfDividendsMinorityInterest	531,000us-gaap_PaymentsOfDividendsMinorityInterest	378,000us-gaap_PaymentsOfDividendsMinorityInterest
Common Stock were issued upon the exercise of stock options			127,041us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
Subsidiaries [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash dividends on subsidiary common stock			$ 3,900,000us-gaap_DividendsCash / dei_LegalEntityAxis = us-gaap_SubsidiariesMember	$ 2,100,000us-gaap_DividendsCash / dei_LegalEntityAxis = us-gaap_SubsidiariesMember	$ 1,600,000us-gaap_DividendsCash / dei_LegalEntityAxis = us-gaap_SubsidiariesMember
Vicor Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance			14,719,889us-gaap_CommonStockCapitalSharesReservedForFutureIssuance / us-gaap_AwardTypeAxis = vicr_VicorPlanMember

X

- Definition

This element represents disclosure of the total aggregate cash dividends paid to the entity by consolidated subsidiaries, by unconsolidated subsidiaries, and by 50% or less owned persons accounted for using the equity method.

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- Definition

Aggregate number of common shares reserved for future issuance.

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- Definition

Amount of paid and unpaid cash dividends declared for classes of stock, for example, but not limited to, common and preferred.

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Amount of cash outflow in the form of ordinary dividends provided by the non-wholly owned subsidiary to noncontrolling interests.

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- Definition

Number of share options (or share units) exercised during the current period.

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- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Amount of stock repurchase plan authorized.

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Amount remaining of a stock repurchase plan authorized.

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- Definition

Tender offer expiration date.

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No definition available.

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