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Goodwill and Intagible Assets (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets, Gross (Excluding Goodwill)	$ 30,820us-gaap_IntangibleAssetsGrossExcludingGoodwill	$ 33,641us-gaap_IntangibleAssetsGrossExcludingGoodwill
Amortization expense	(1,442)kvhi_Amortizationexpense
Finite-Lived Intangible Assets, Translation Adjustments	$ (1,379)us-gaap_FiniteLivedIntangibleAssetsTranslationAdjustments

X

- Definition

Amortization expense

+ References

No definition available.

+ Details

Name:	kvhi_Amortizationexpense
Namespace Prefix:	kvhi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount of increase (decrease) to assets, excluding financial assets and goodwill, lacking physical substance with a finite life for foreign currency translation adjustments.

+ References

No definition available.

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetsTranslationAdjustments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

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

X

- Definition

Amount before accumulated amortization of intangible assets, excluding goodwill.

+ References

No definition available.

+ Details

Name:	us-gaap_IntangibleAssetsGrossExcludingGoodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant