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Summary of Significant Accounting Policies (Details Textual) (USD $) In Thousands, unless otherwise specified	12 Months Ended			7 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2012
Concentration of Credit Risk and Single Source Suppliers
Marketable securities	$ 24,513us-gaap_MarketableSecuritiesCurrent	$ 46,386us-gaap_MarketableSecuritiesCurrent
Advertising Costs
Advertising expense	2,825us-gaap_AdvertisingExpense	3,189us-gaap_AdvertisingExpense	2,523us-gaap_AdvertisingExpense
Foreign Currency Translation
Foreign currency transaction gain (loss), before tax	126us-gaap_ForeignCurrencyTransactionGainLossBeforeTax	123us-gaap_ForeignCurrencyTransactionGainLossBeforeTax	37us-gaap_ForeignCurrencyTransactionGainLossBeforeTax
Net sales to SANG
Accounting Policies [Line Items]
Contract amount				35,600kvhi_RevenueRecognitionMultipleDeliverableArrangementsContractAmount / us-gaap_MajorCustomersAxis = kvhi_UnitedStatesArmyProgramOfficeSaudiArabianNationalGuardMember
Contracts revenue	1,300us-gaap_ContractsRevenue / us-gaap_MajorCustomersAxis = kvhi_UnitedStatesArmyProgramOfficeSaudiArabianNationalGuardMember	19,600us-gaap_ContractsRevenue / us-gaap_MajorCustomersAxis = kvhi_UnitedStatesArmyProgramOfficeSaudiArabianNationalGuardMember
Net sales to SANG | Defense Products
Accounting Policies [Line Items]
Contract amount				21,200kvhi_RevenueRecognitionMultipleDeliverableArrangementsContractAmount / us-gaap_MajorCustomersAxis = kvhi_UnitedStatesArmyProgramOfficeSaudiArabianNationalGuardMember / us-gaap_ProductOrServiceAxis = kvhi_DefenseProductsMember
Net sales to SANG | Sevices
Accounting Policies [Line Items]
Contract amount				$ 14,400kvhi_RevenueRecognitionMultipleDeliverableArrangementsContractAmount / us-gaap_MajorCustomersAxis = kvhi_UnitedStatesArmyProgramOfficeSaudiArabianNationalGuardMember / us-gaap_ProductOrServiceAxis = kvhi_SevicesMember

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Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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-Name Accounting Standards Codification

-Topic 720

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Amount of investments in debt and equity securities, including, but not limited to, held-to-maturity, trading and available-for-sale expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer.

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