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Income Taxes (Details Textual) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Tax Credit Carryforward [Line Items]
Income (loss) before income taxes	$ 1,325us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	$ 6,683us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	$ 6,843us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
Valuation allowance, deferred tax asset, change in amount	1,457us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount
Valuation allowance, decrease in expiration of reserved state tax credit-carryforwards	223kvhi_ValuationAllowanceDecreaseInExpirationOfReservedStateTaxCreditCarryforwards
Valuation allowance, increase in net operating loss and credit carryforwards, tax deductions	15kvhi_ValuationAllowanceIncreaseInNetOperatingLossAndCreditCarryforwardsTaxDeductions
Valuation allowance, amount	4,157us-gaap_DeferredTaxAssetsValuationAllowance	2,700us-gaap_DeferredTaxAssetsValuationAllowance
Change in valuation allowance	1,665us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	491us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	468us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
Undistributed earnings of foreign subsidiaries	3,464us-gaap_UndistributedEarningsOfForeignSubsidiaries
Deferred Tax Assets, Tax Credit Carryforwards And Operating Loss Carryforwards
Tax Credit Carryforward [Line Items]
Valuation allowance, amount	1,243us-gaap_DeferredTaxAssetsValuationAllowance / us-gaap_ValuationAllowanceByDeferredTaxAssetAxis = kvhi_DeferredTaxAssetsTaxCreditCarryforwardsAndOperatingLossCarryforwardsMember
Alternative Minimum Tax
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	132us-gaap_TaxCreditCarryforwardAmount / us-gaap_TaxCreditCarryforwardAxis = kvhi_AlternativeMinimumTaxMember
Federal and State Tax Jurisdictions
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	1,702us-gaap_TaxCreditCarryforwardAmount / us-gaap_IncomeTaxAuthorityAxis = kvhi_InternalRevenueServiceAndStateAndLocalTaxJurisdictionMember
Federal
Tax Credit Carryforward [Line Items]
Income (loss) before income taxes	907us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_IncomeTaxAuthorityAxis = us-gaap_InternalRevenueServiceIRSMember	5,500us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_IncomeTaxAuthorityAxis = us-gaap_InternalRevenueServiceIRSMember	7,917us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_IncomeTaxAuthorityAxis = us-gaap_InternalRevenueServiceIRSMember
Federal | Research Tax Credit Carryforward
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	3,379us-gaap_TaxCreditCarryforwardAmount / us-gaap_IncomeTaxAuthorityAxis = us-gaap_InternalRevenueServiceIRSMember / us-gaap_TaxCreditCarryforwardAxis = us-gaap_ResearchMember
State Tax Authority
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	256us-gaap_TaxCreditCarryforwardAmount / us-gaap_IncomeTaxAuthorityAxis = us-gaap_StateAndLocalJurisdictionMember
Change in valuation allowance	1,665us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance / us-gaap_IncomeTaxAuthorityAxis = us-gaap_StateAndLocalJurisdictionMember
State Tax Authority | Research Tax Credit Carryforward
Tax Credit Carryforward [Line Items]
Tax credit carryforward, amount	3,367us-gaap_TaxCreditCarryforwardAmount / us-gaap_IncomeTaxAuthorityAxis = us-gaap_StateAndLocalJurisdictionMember / us-gaap_TaxCreditCarryforwardAxis = us-gaap_ResearchMember
Foreign Tax Authority
Tax Credit Carryforward [Line Items]
Operating loss carryforwards	6,000us-gaap_OperatingLossCarryforwards / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember
Tax credit carryforward, amount	762us-gaap_TaxCreditCarryforwardAmount / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember
Income (loss) before income taxes	$ 418us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember	$ 1,183us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember	$ (1,074)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember

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- Definition

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 2

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Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

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-Publisher FASB

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-Topic 235

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the country of domicile.

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