Note 2 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2023

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
2024		21
2025		21
2026		15
Total	$	57