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Income Taxes - Additional Information (Details) - USD ($) |  | 12 Months Ended
--- | --- | ---
Jan. 07, 2021 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2018
Income Taxes [Line Items] |  |  |  |
U.S. federal statutory tax rate |  | 21.00% | 21.00% |
Valuation allowance |  | $ 9,452,000 | $ 8,520,000 |
Increase in valuation allowance |  | 900,000 |  |
Unrecognized tax benefit that would impact effective tax rate, if recognized |  | 129,000 |  |
Income tax interest and penalties accrued |  | 100,000 | 100,000 |
Income tax interest and penalties |  | 0 | $ 0 |
NimbeLink |  |  |  |
Income Taxes [Line Items] |  |  |  |
Cumulative change in ownership | $ 3,000,000 |  |  |
Federal |  |  |  |
Income Taxes [Line Items] |  |  |  |
Net operating loss carry forwards |  | $ 1,800,000 |  |
Net operating loss carry forwards, expire period |  | 2022 |  |
Operating loss carryforward available to offset future taxable income |  | $ 9,900,000 |  |
Percentage of future taxable income offset by operating loss carryforward |  |  |  | 80.00%
Tax credit carry forwards |  | $ 29,900,000 |  |
Tax credit carry forwards, expire period |  | 2026 |  |
State |  |  |  |
Income Taxes [Line Items] |  |  |  |
Net operating loss carry forwards |  | $ 1,600,000 |  |
Net operating loss carry forwards, expire period |  | 2028 |  |
Tax credit carry forwards |  | $ 11,000,000.0 |  |

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- Definition Amount, before allocation of a valuation allowances, of deferred tax assets attributable to deductible tax credit carryforwards including, but not limited to, research, foreign, general business, alternative minimum tax, and other deductible tax credit carryforwards. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32632-109319 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32559-109319 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32621-109319 + Details
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