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Subsequent Events (Details) - USD ($) $ in Thousands		6 Months Ended
	Aug. 09, 2022	Jun. 30, 2022	Jun. 30, 2021
Subsequent Event [Line Items]
Gross proceeds		$ 2,378	$ 0
Subsequent Event | Inertial navigation
Subsequent Event [Line Items]
Gross proceeds	$ 55,000
Deliverable at sale	$ 1

X

- Definition

Divestiture Of Businesses, Deliverable At Sale

+ References

No definition available.

+ Details

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Namespace Prefix:	kvhi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3179-108585

+ Details

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Balance Type:	debit
Period Type:	duration

X

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
Data Type:	na
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