Business and Credit Concentrations (Details Textual)	9 Months Ended
Sep. 30, 2012
Business and Credit Concentrations (Textual) [Abstract]
Business concentration risk percentage attributable to net sales	10.00%

Business concentration risk percentage attributable to net sales.

No definition available.

Name:	kvhi_BusinessConcentrationRiskPercentageAttributableToNetSales
Namespace Prefix:	kvhi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration