Consolidated Statements of Cash Flows - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023
Cash flows from operating activities:
Net income attributable to LGL Group or non-controlling interests		$ 522	$ 317
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	[1]	0	1
Amortization of finite-lived intangible assets		21	21
Stock-based compensation		36	3
Realized loss on sale of marketable securities		0	4,316
Unrealized loss (gain) on marketable securities		5	(4,700)
Deferred income tax expense (benefit)		56	82
Changes in operating assets and liabilities:
(Increase) decrease in accounts receivable, net		(137)	187
(Increase) decrease in inventories, net		(63)	61
(Increase) decrease in prepaid expenses and other assets		(7)	167
Increase (decrease) in accounts payable, accrued compensation, income taxes and commissions and other		441	(70)
Total adjustments		352	68
Net cash provided by operating activities		874	385
Cash flows from investing activities:
Proceeds from sale of marketable securities		0	16,947
Consolidation of noncontrolling interests		0	1,872
Net cash provided by investing activities		0	18,819
Increase in cash and cash equivalents		874	19,204
Cash and cash equivalents at beginning of year		40,711	21,507
Cash and cash equivalents at end of year		41,585	40,711
Supplemental Disclosure:
Income taxes paid		$ 76	$ 207

[1] Depreciation and Amortization are included within the other segment expense captions, such as Manufacturing cost of sales, Engineering, or Other segment items.