Summary of Significant Accounting Policies - Narrative (Details) shares in Thousands, $ in Thousands					1 Months Ended	3 Months Ended		12 Months Ended
	Oct. 11, 2022 USD ($)	Aug. 09, 2022 USD ($) extensionOption	Apr. 29, 2022 USD ($)	Mar. 07, 2022 USD ($) hour	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($) satellite_hub	Sep. 30, 2021 USD ($)	Dec. 31, 2022 USD ($) satellite_hub segment shares	Dec. 31, 2021 USD ($) shares	Oct. 01, 2021	Dec. 31, 2020 USD ($)
Accounting Policies [Line Items]
Number of Countries in which Entity Operates | satellite_hub						150		150
Executive retention bonus, percent of executive's base salary								75.00%
PPP loan forgiveness							$ 6,979	$ 0	$ 6,979
Management transition expense accrual					$ 539	$ 90		90
Separation payment expense				$ 201
Percent reduction in workforce					10.00%
Restructuring charges								2,171
Gain on sale of properties			$ 682
Accrued employee benefits						867		867
Product warranty accrual						1,287		1,287	1,084		$ 1,725
Advertising expense								482	919
Foreign currency exchange gains (losses)								$ 517	$ (3)
Antidilutive securities (in shares) | shares								1,359	747
Number of operating segments | segment								1
Marketable securities						55,680		$ 55,680	$ 13,147
Foreign Operation Restructuring
Accounting Policies [Line Items]
Restructuring charges								388
Sales, marketing and support
Accounting Policies [Line Items]
Restructuring charges								935
General and administrative
Accounting Policies [Line Items]
Restructuring charges								801
Research and development
Accounting Policies [Line Items]
Restructuring charges								365
Product | Cost of Sales
Accounting Policies [Line Items]
Restructuring charges								12
Service | Cost of Sales
Accounting Policies [Line Items]
Restructuring charges								58
Employee Severance
Accounting Policies [Line Items]
Restructuring charges								1,844
Legal And Advisory Fees
Accounting Policies [Line Items]
Restructuring charges								327
Chief Operating Officer
Accounting Policies [Line Items]
Annual base salary	$ 448
Base salary, percent of base salary, second half of year	80.00%
Retention bonus, percent of base salary	75.00%
Retention bonus, percent of highest base salary	75.00%
Chief Operating Officer | Restricted Stock And Non-Statutory Stock Options
Accounting Policies [Line Items]
Aggregate grant date fair value	$ 100
President And Chief Executive Officer
Accounting Policies [Line Items]
Years of service				40 years
Management transition hours | hour				50,000
Intertial Navigation
Accounting Policies [Line Items]
Proceeds from the sale of KVH Media Group Entertainment Limited, net of cash sold								$ 55,000	$ 0
Intertial Navigation | Intertial Navigation
Accounting Policies [Line Items]
Proceeds from the sale of KVH Media Group Entertainment Limited, net of cash sold		$ 55,000
Deliverable at sale		$ 1,000
Working capital adjustment						$ 96
Transition support service period		6 months
Transition support service, number of extensions | extensionOption		2
Transition support service, extension period		3 months
Monthly transaction fees		$ 100
Contra-expense		$ 923
KVH Media Group Reporting Unit
Accounting Policies [Line Items]
Reporting unit, percent fair value in excess of carrying value										140.00%
KVH Media Group
Accounting Policies [Line Items]
Proceeds from the sale of KVH Media Group Entertainment Limited, net of cash sold			$ 2,378
Revenue-generating assets
Accounting Policies [Line Items]
Useful lives								5 years
Motor vehicles
Accounting Policies [Line Items]
Useful lives								5 years
Minimum
Accounting Policies [Line Items]
Limited product warranty period								1 year
Minimum | Building and improvements
Accounting Policies [Line Items]
Useful lives								5 years
Minimum | Machinery, satellite hubs and equipment
Accounting Policies [Line Items]
Useful lives								4 years
Minimum | Office and computer equipment
Accounting Policies [Line Items]
Useful lives								3 years
Maximum
Accounting Policies [Line Items]
Limited product warranty period								2 years
Maximum | Building and improvements
Accounting Policies [Line Items]
Useful lives								40 years
Maximum | Machinery, satellite hubs and equipment
Accounting Policies [Line Items]
Useful lives								10 years
Maximum | Office and computer equipment
Accounting Policies [Line Items]
Useful lives								7 years