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Income Taxes - Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation (Details) - USD ($) $ in Thousands | 12 Months Ended
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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)

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- Definition Amount of reported income tax expense (benefit) in excess of (less than) expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to nondeductible expense for award under share-based payment arrangement. Includes, but is not limited to, expense determined to be nondeductible upon grant or after for award under share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319 + Details
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