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v3.7.0.1

Segment Reporting (Details Textual) | 3 Months Ended
--- | ---
Mar. 31, 2017 | Mar. 31, 2016
Mobile Connectivity [Member] | Mobile Comm Product Sales [Member] |  |
Segment Reporting Information [Line Items] |  |
Percent of Consolidated Net Sales | 25.00% | 27.00%
Mobile Connectivity [Member] | VSAT Airtime Service Sales [Member] |  |
Segment Reporting Information [Line Items] |  |
Percent of Consolidated Net Sales | 40.00% | 38.00%
Mobile Connectivity [Member] | Training and Content Sales [Member] |  |
Segment Reporting Information [Line Items] |  |
Percent of Consolidated Net Sales | 19.00% | 22.00%
Intertial Navigation [Member] | FOG System Sales [Member] |  |
Segment Reporting Information [Line Items] |  |
Percent of Consolidated Net Sales | 11.00% | 10.00%
Non-US [Member] |  |
Segment Reporting Information [Line Items] |  |
Percent of consolidated long-lived tangible assets | 10.00% | 10.00%
Percent of Consolidated Net Sales | 59.00% | 63.00%

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- Definition Percent of Consolidated Net Sales + References No definition available. + Details
Name: | kvhi_PercentofConsolidatedNetSales
Namespace Prefix: | kvhi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Percent of consolidated long-lived tangible assets + References No definition available. + Details
Name: | kvhi_Percentofconsolidatedlonglivedtangibleassets
Namespace Prefix: | kvhi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=kvhi_MobileConnectivityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_SubsegmentsAxis=kvhi_MobileCommProductSalesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_SubsegmentsAxis=kvhi_VSATAirtimeServiceSalesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_SubsegmentsAxis=kvhi_TrainingandContentSalesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=kvhi_IntertialNavigationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_SubsegmentsAxis=kvhi_FOGSystemSalesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_StatementGeographicalAxis=us-gaap_NonUsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |