Income Taxes - Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Income tax benefit at Federal statutory income tax rate	$ (710)	$ (2,447)
Increase (decrease) in income taxes resulting from:
State income tax benefit, net of federal benefit	(17)	(386)
State research and development, investment credits	265	(137)
Non-deductible meals & entertainment	8	1
Non-deductible stock compensation expense	133	(194)
Non-deductible compensation under 162(m)	7	35
Prior Period Prepaid Tax	276	0
Foreign Withholding Taxes	139	0
Foreign tax rate differential	(3)	58
Federal research and development credits	(55)	(607)
Uncertain tax positions	(99)	32
Provision to tax return adjustments	110	33
Change in valuation allowance	530	5,066
PPP loan forgiveness	0	(1,455)
Sale of KVH Media Group Entertainment Limited	(206)	0
Prior period adjustments	0	(117)
Other	168	10
Income tax expense (benefit)	$ 546	$ (108)