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Note 2 - Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2024
Notes Tables |
Schedule of Investments in and Advances to Affiliates, Schedule of Investments [Table Text Block] |
Subsidiary Name |  | State or Country of Organization |  | LGL Group Investment
Precise Time and Frequency, LLC |  | Delaware |  | 100.0 | %
P3 Logistic Solutions LLC |  | Delaware |  | 100.0 |
Lynch Capital International, LLC |  | Delaware |  | 100.0 |
LGL Systems Acquisition Holding Company, LLC (a) |  | Delaware |  | 34.8 |
Lynch Systems Acquisition Holding Company, LLC |  | Delaware |  | 100.0 |
LGL Systems Nevada Management Partners LLC (b) |  | Nevada |  | 1.0 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] |
Year |  | Amount
2025 |  |  | 21 |
2026 |  |  | 15 |
Total |  | $ | 36 |

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- Definition A tabular presentation of the information summarizing investments in and advances to majority-owned subsidiaries, other controlled companies, and other affiliates, as prescribed by the SEC. It reflects specified information about ownership, financial results from, and financial position in such entities. Includes the tabular presentations that disaggregate investments in and advances to majority-owned subsidiaries, other controlled companies, and other affiliates. + References No definition available. + Details
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- Definition Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 40 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482640/350-30-55-40 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-2 + Details
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