Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Cash flows from operating activities:
Net income attributable to LGL Group or non-controlling interests	$ 762	$ 294
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Amortization of finite-lived intangible assets	16	16
Stock-based compensation	44	27
Unrealized (gain) loss on marketable securities	(13)	6
Deferred income taxes	(654)	25
Changes in operating assets and liabilities:
Decrease in accounts receivable, net	33	223
Increase in inventories, net	(1)	(134)
Decrease in prepaid expenses and other assets	61	88
Increase in accounts payable, accrued compensation, income taxes and commissions and other	177	346
Total adjustments	(337)	597
Net cash provided by operating activities	425	891
Cash flows from financing activities:
Proceeds from exercise of warrants	29	0
Warrant-related costs	(102)	0
Payment for repurchase of common stock	(366)	0
Net cash used in financing activities	(439)	0
(Decrease) increase in cash and cash equivalents	(14)	891
Cash and cash equivalents at beginning of period	41,585	40,711
Cash and cash equivalents at end of period	41,571	41,602
Non-cash financing activity:
Proceeds from exercise of warrants receivable	298	0
Supplemental disclosure:
Income taxes paid	$ 47	$ 76