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v3.20.4

Share Buyback Program (Details) $ in Thousands | 1 Months Ended | 12 Months Ended | 15 Months Ended |
--- | --- | --- | --- | ---
Jan. 31, 2020 USD ($) shares | Dec. 31, 2020 Program | Dec. 31, 2020 USD ($) shares | Oct. 04, 2019 shares
Share Buyback Program (Textual) [Abstract] |  |  |  |
Common stock available for repurchase (in shares) |  |  |  | 1,000,000
Shares repurchased (in shares) | 36,000 |  | 151,000 |
Shares repurchased | $ | $ 390 |  | $ 1,690 |
Number of other repurchase programs outstanding | Program |  | 0 |  |

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- Definition Common Stock Repurchase Cost + References No definition available. + Details
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Namespace Prefix: | kvhi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Common Stock Repurchase Program + References No definition available. + Details
Name: | kvhi_CommonStockRepurchaseProgram
Namespace Prefix: | kvhi_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- Definition Share buyback program. + References No definition available. + Details
Name: | kvhi_ShareBuybackProgramTextualAbstract
Namespace Prefix: | kvhi_
Data Type: | xbrli:stringItemType
Balance Type: | na
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- Definition Stock repurchase program other outstanding number. + References No definition available. + Details
Name: | kvhi_StockRepurchaseProgramOtherOutstandingNumber
Namespace Prefix: | kvhi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant