The LGL Group, Inc. (LGL) 10-K 1 Apr 24 2023 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2023	Mar. 15, 2024	Jun. 30, 2023
Document Information [Line Items]
Entity Central Index Key	0000061004
Entity Registrant Name	LGL GROUP INC
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2023
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2023
Document Transition Report	false
Entity File Number	001-00106
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	38-1799862
Entity Address, Address Line One	2525 Shader Road
Entity Address, City or Town	Orlando
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	32804
City Area Code	407
Local Phone Number	298-2000
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	false
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float			$ 14,734,294
Entity Common Stock, Shares Outstanding		5,373,055
Auditor Name	PKF O'Connor Davies, LLP
Auditor Location	New York, New York
Auditor Firm ID	127
Warrant [Member]
Document Information [Line Items]
Title of 12(b) Security	Warrants to Purchase Common Stock, $0.01 par value
Trading Symbol	LGL WS
Security Exchange Name	NYSE
Common Stock [Member]
Document Information [Line Items]
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	LGL
Security Exchange Name	NYSE

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 40,711	$ 21,507
Marketable securities	22	16,585
Accounts receivable, net of allowance of $58 and $86, respectively	356	543
Inventories, net	204	265
Prepaid expenses and other current assets	273	440
Total current assets	41,566	39,340
Property, plant and equipment, net	0	1
Right-of-use lease asset	75	132
Intangible assets, net	57	78
Deferred income tax asset, net	152	234
Total assets	41,850	39,785
Current liabilities:
Accounts payable	93	310
Accrued compensation and commissions expense	264	170
Income taxes payable	41	1
Other accrued expenses and liabilities	76	106
Total current liabilities	474	587
Other liabilities	694	708
Total liabilities	1,168	1,295
Contingencies (Note 14)
Stockholders' equity:
Common stock ($0.01 par value; 30,000,000 shares authorized; 5,454,639 and 5,434,521 shares issued as of 2023 and 2022, respectively; 5,373,055 and 5,352,937 shares outstanding as of 2023 and 2022, respectively)	53	53
Treasury stock, at cost (81,584 shares as of 2023 and 2022, respectively)	(580)	(580)
Additional paid-in capital	46,349	46,346
Accumulated deficit	(7,060)	(7,329)
Total LGL Group stockholders' equity	38,762	38,490
Non-controlling interests	1,920	0
Total stockholders' equity	40,682	38,490
Total liabilities and stockholders' equity	$ 41,850	$ 39,785

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Accounts Receivable, Allowance for Credit Loss, Current	$ 58	$ 86
Common Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.01	$ 0.01
Common Stock, Shares Authorized (in shares)	30,000,000	30,000,000
Common Stock, Shares, Issued (in shares)	5,454,639	5,434,521
Common Stock, Shares, Outstanding (in shares)	5,373,055	5,352,937
Treasury Stock, Common, Shares (in shares)	81,584	81,584

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended																12 Months Ended
	Dec. 31, 2023		Sep. 30, 2023		Jun. 30, 2023		Mar. 31, 2023		Dec. 31, 2022		Sep. 30, 2022		Jun. 30, 2022		Mar. 31, 2022		Dec. 31, 2023	Dec. 31, 2022
Revenues:
Net sales	$ 446		$ 438		$ 403		$ 441		$ 524		$ 344		$ 370		$ 417		$ 1,728	$ 1,655
Net investment income	549		544		275		198		352		54		10		(3)		1,566	413
Net gains (losses)	0	[1]	(4)	[1]	43	[1]	345	[1]	(298)	[1]	(2,121)	[1]	(2,373)	[1]	45	[1]	384	(4,747)
Total revenues	995		978		721		984		578		(1,723)		(1,993)		459		3,678	(2,679)
Expenses:
Manufacturing cost of sales	201		195		208		192		165		203		227		242		796	837
Engineering, selling and administrative	465		584		645		542		576		669		623		1,022		2,236	2,890
Total expenses	666		779		853		734		741		872		850		1,264		3,032	3,727
Income (loss) from continuing operations before income tax expense																	646	(6,406)
Income tax expense (benefit)	169		69		(2)		65		(164)		(611)		(588)		(166)		301	(1,529)
Net income (loss) from continuing operations	160		130		(130)		185		1	[2]	(1,984)	[2]	(2,255)	[2]	(639)	[2]	345	(4,877)
(Loss) income from discontinued operations, net of tax	0		0		0		(28)		132		488		457		808		(28)	1,885
Net income (loss)	160		130		(130)		157		133		(1,496)		(1,798)		169		317	(2,992)
Less: Net income attributable to non-controlling interests	26		22		0		0		0		0		0		0		48	0
Net income (loss) attributable to LGL Group common stockholders	$ 134		$ 108		$ (130)		$ 157		$ 133		$ (1,496)		$ (1,798)		$ 169		$ 269	$ (2,992)
Income (loss) per common share attributable to LGL Group common stockholders:
Income (loss) from continuing operations (in dollars per share)	$ 0.03	[2]	$ 0.02	[2]	$ (0.02)	[2]	$ 0.03	[2]	$ 0	[2]	$ (0.37)	[2]	$ (0.42)	[2]	$ (0.12)	[2]	$ 0.06	$ (0.91)
(Loss) income from discontinued operations (in dollars per share)	0	[2]	0	[2]	0	[2]	(0.01)	[2]	0.02	[2]	0.09	[2]	0.09	[2]	0.15	[2]	(0.01)	0.35
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	0.03	[2]	0.02	[2]	(0.02)	[2]	0.03	[2]	0.02	[2]	(0.28)	[2]	(0.34)	[2]	0.03	[2]	0.05	(0.56)
Diluted:
Income (loss) from continuing operations (in dollars per share)	0.02	[2]	0.02	[2]	(0.02)	[2]	0.03	[2]	0	[2]	(0.37)	[2]	(0.42)	[2]	(0.12)	[2]	0.06	(0.91)
(Loss) income from discontinued operations (in dollars per share)	0	[2]	0	[2]	0	[2]	(0.01)	[2]	0.02	[2]	0.09	[2]	0.09	[2]	0.15	[2]	(0.01)	0.35
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	$ 0.02	[2]	$ 0.02	[2]	$ (0.02)	[2]	$ 0.03	[2]	$ 0.02	[2]	$ (0.28)	[2]	$ (0.34)	[2]	$ 0.03	[2]	$ 0.05	$ (0.56)
Weighted average shares outstanding:
Basic (in shares)	5,352,937		5,352,937		5,352,937		5,352,937		5,349,187		5,346,043		5,334,187		5,323,973		5,352,937	5,338,417
Diluted (in shares)	5,381,685		5,355,006		5,352,937		5,352,937		5,356,188		5,346,043		5,334,187		5,345,202		5,352,937	5,383,666
[1]During Q1 and Q2 2023, the net gains primarily relate to the sale of our investments in mutual funds managed by GAMCO Investors, Inc.[2]Basic and diluted earnings per share are calculated using actual, unrounded amounts. Therefore, (i) the components of earnings per share may not sum to its corresponding total or (ii) the quarterly earnings per share may not sum to the earnings per share on the Consolidated Statements of Operations.

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Treasury Stock, Common [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Parent [Member]	Noncontrolling Interest [Member]	Total
Balance (in shares) at Dec. 31, 2021	5,308,973
Balance at Dec. 31, 2021	$ 53	$ (580)	$ 45,817	$ 9,453	$ 54,743	$ 0	$ 54,743
Net loss attributable to LGL Group or non-controlling interests	0	0	0	(2,992)	(2,992)	0	(2,992)
Consolidation of non-controlling interests	0	0	0	0	0	0	0
MtronPTI Spin-off	$ 0	0	0	(13,790)	(13,790)	0	(13,790)
Exercise of stock options (in shares)	15,000
Exercise of stock options	$ 0	0	191	0	191	0	191
Repurchase of shares exercised (in shares)	(4,786)
Repurchase of shares exercised	$ 0	0	(50)	0	(50)	0	(50)
Stock-based compensation (in shares)	30,000
Stock-based compensation	$ 0	0	388	0	388	0	388
Balance (in shares) at Dec. 31, 2022	5,349,187,000
Balance at Dec. 31, 2022	$ 53	(580)	46,346	(7,329)	38,490	0	38,490
Net loss attributable to LGL Group or non-controlling interests	0	0	0	269	269	48	317
Consolidation of non-controlling interests	0	0	0	0	0	1,872	1,872
MtronPTI Spin-off	0	0	0	0	0	0	0
Exercise of stock options	0	0	0	0	0	0	0
Repurchase of shares exercised	$ 0	0	0	0	0	0	0
Stock-based compensation (in shares)	23,868
Stock-based compensation	$ 0	0	3	0	3	0	3
Balance (in shares) at Dec. 31, 2023	5,373,055
Balance at Dec. 31, 2023	$ 53	$ (580)	$ 46,349	$ (7,060)	$ 38,762	$ 1,920	$ 40,682

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Cash flows from operating activities:
Net loss attributable to LGL Group or non-controlling interests	$ 317	$ (2,992)
Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities:
Depreciation	1	496
Amortization of finite-lived intangible assets	21	62
Stock-based compensation	3	388
Realized loss on sale of marketable securities	4,316	22,868
Unrealized gain on marketable securities	(4,700)	(18,121)
Deferred income tax expense (benefit)	82	(1,516)
Changes in operating assets and liabilities:
Decrease (increase) in accounts receivable, net	187	(613)
Decrease (increase) in inventories, net	61	(2,330)
Decrease (increase) in prepaid expenses and other assets	167	(135)
Decrease in income taxes payable	40	(476)
(Decrease) increase in accounts payable, accrued compensation and commissions expense and other	(110)	1,552
Total adjustments	68	2,175
Net cash provided by (used in) operating activities	385	(817)
Cash flows from investing activities:
Capital expenditures	0	(662)
Proceeds from sale of marketable securities	16,947	2,058
Purchase of marketable securities	0	(7,229)
Consolidation of noncontrolling interests	1,872	0
Net cash provided by (used in) investing activities	18,819	(5,833)
Cash flows from financing activities:
Transfer to M-tron Industries, Inc. related to Separation	0	(1,000)
Exercise of stock options	0	191
Payment for taxes related to net share settlement of equity awards	0	(50)
Net cash (used in) financing activities	0	(859)
Increase (decrease) in cash and cash equivalents	19,204	(7,509)
Cash and cash equivalents at beginning of year	21,507	29,016
Cash and cash equivalents at end of year	40,711	21,507
Noncash Financing Activity:
Distribution of M-tron Industries, Inc. related to Separation	0	(12,790)
Supplemental Disclosure:
Income taxes paid	$ 207	$ 741

Insider Trading Arrangements

Insider Trading Arrangements	12 Months Ended
	Dec. 31, 2023
Insider Trading Arr Line Items
Material Terms of Trading Arrangement [Text Block]	9B. Other Information Insider Trading Arrangements During the three December 31, 2023 none 10b5 1 10b5 1 408
Rule 10b5-1 Arrangement Terminated [Flag]	false
Rule 10b5-1 Arrangement Adopted [Flag]	false
Non-Rule 10b5-1 Arrangement Terminated [Flag]	false
Non-Rule 10b5-1 Arrangement Adopted [Flag]	false

Note 1 - Basis of Presentation

Note 1 - Basis of Presentation	12 Months Ended
	Dec. 31, 2023
Notes to Financial Statements
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	1. The LGL Group, Inc. is a holding company engaged in services, merchant investment, and manufacturing business activities. LGL Group was incorporated in 1928 2007. The Company’s manufacturing business is operated through its subsidiary Precise Time and Frequency, LLC ("PTF"), which has operations in Wakefield, Massachusetts. PTF is engaged in the design of high-performance Frequency and Time Reference Standards that form the basis for timing and synchronization in various applications. As part of our ongoing efforts developing our Merchant Investment segment, the Company took additional steps and solidified its role as the Managing Partner of a syndicated investment partnership. We have pursued opportunities for direct investing for control, direct investing as a minority with the ability to influence such as through board representation and direct investing to build an industry platform to acquire and build along an industry vertical. The consolidated financial statements include the accounts of The LGL Group, Inc., its majority-owned subsidiaries, and variable interest entities ("VIEs") of which we are the primary beneficiary. These consolidated financial statements and accompanying notes have been prepared in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP"). Intercompany accounts and transactions have been eliminated in consolidation. Certain prior period balances within the Notes to the Consolidated Financial Statements were reclassified to conform with the current period presentation, including: • Note 5 two • Note 15 ◦ Inventories, Net table: the components of Inventory, net are shown gross of Reserve for excess and obsolete inventory ◦ Intangible Assets, Net: the components of Intangible assets, net are shown gross of Accumulated amortization Spin-Off of M-tron Industries, Inc. On October 7, 2022, The Separation was achieved through LGL’s distribution (the "Distribution") of 100% of the shares of MtronPTI's common stock to holders of LGL's common stock as of the close of business on the record date of September 30, 2022. one No The historical financial results of the MtronPTI business for periods prior to the distribution date along with the related direct costs of the Separation ("Separation Costs") are reflected in the Company’s consolidated financial statements as discontinued operations. Unless otherwise noted, discussion in these Notes to the Consolidated Financial Statements refers to our continuing operations. Refer to Note 3

Note 2 - Summary of Significant

Note 2 - Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2023
Notes to Financial Statements
Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block]	2. Principles of Consolidation In the normal course of business, the Company invests in or has transactions with limited membership entities or other entities. These entities are considered to be either VIEs or voting interest entities ("VOEs"). The consolidation guidance requires an assessment involving judgments and analysis to determine (a) whether an entity in which the Company holds a variable interest is a VIE and (b) whether the Company's involvement, through holding interests directly or indirectly in the entity or contractually through other variable interests, would give it a controlling financial interest. The Company consolidates entities in which it, directly or indirectly, is determined to have a controlling financial interest. • VIEs not • VOEs not 50% The Company reviews its evaluation of whether an entity is a VIE as well as its consolidation conclusions quarterly to identify whether any reconsideration events have occurred. During June 2023, As of December 31, 2023 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 (a) Entity is a consolidated VIE (b) Entity is an unconsolidated VIE Refer to Note 7 Equity Method Investments When the Company does not 20% 50% Non-Controlling Interests Non-controlling interests represent the interests of shareholders, other than the Company, in consolidated entities. Net income (loss) attributable to non-controlling interests represents such shareholders' interests in the earnings and loss of those entities, or the attribution of results from consolidated VIEs to which the Company is not The portion of the equity interest in LGL Systems the Company does not Uses of Estimates The preparation of the consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates. Cash and Cash Equivalents Cash and cash equivalents consist of cash on hand and highly liquid investments with no three Marketable Securities The Company accounts for equity securities under Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") Topic 321, Investments - Equity Securities 321" Realized and unrealized gains and losses on investments in Marketable securities are recorded in Net gains (losses) on the Consolidated Statement of Operations. Refer to Note 5 Accounts Receivable Accounts receivable consists principally of amounts due from both domestic and foreign customers. Credit is extended based on an evaluation of the customer's financial condition and collateral is not The Company maintains an allowance for credit losses for estimated uncollectible accounts receivable. Our reserves for estimated credit losses are based upon historical experience, specific customer collection issues, current conditions and reasonable and supportable forecasts that affect the collectability of the remaining cash flows over the contract terms of our receivables. Accounts are written off against the allowance account they are determined to no Inventories Inventories are valued at the lower of cost or net realizable value using the first first The Company maintains a reserve for inventory based on estimated losses that result from inventory that becomes obsolete or for which the Company has excess inventory levels. In determining these estimates, the Company performs an analysis on current demand and usage for each inventory item over historical time periods. Based on that analysis, the Company reserves a percentage of the inventory amount within each time period based on historical demand and usage patterns of specific items in inventory. Refer to Note 15 Machinery and Equipment, Net Property, plant and equipment are recorded at cost less accumulated depreciation and include expenditures for major improvements. Maintenance and repairs are charged to operations as incurred. Depreciation is computed for financial reporting purposes using the straight-line method over the estimated useful lives of the assets from 3 years to 10 years for other fixed assets. Property, plant and equipment are periodically reviewed for indicators of impairment. If any such indicators were noted, the Company would assess the appropriateness of the assets' carrying value and record any impairment at that time. Refer to Note 15 Intangible Assets Intangible assets are recorded at cost less accumulated amortization. Amortization is computed for financial reporting purposes using the straight-line method over the estimated useful lives of the assets, which range up to 10 years. The intangible assets consist of intellectual property. The estimated aggregate amortization expense for intangible assets for each of the remaining years of the estimated useful life is as follows: Year Amount 2024 21 2025 21 2026 15 Total $ 57 Warranties The Company offers a standard one may not not not Each month, the Company records a specific warranty reserve for approved RMAs covering products that have not not not Revenue Recognition for Sales to Customers The Company recognizes revenue from the sale of its products in accordance with the criteria in ASC Topic 606, Revenue from Contracts with Customers 606" Step 1: Step 2: Step 3: Step 4: Step 5: The Company meets these conditions upon the Company’s satisfaction of the performance obligation, usually at the time of shipment to the customer, because control passes to the customer at that time. Our standard payment terms for customers are net due within 30 none 60 The Company provides disaggregated revenue details by geographic markets in Note 16 The Company offers a limited right of return and/or authorized price protection provisions in its agreements with certain electronic component distributors who resell the Company's products to original equipment manufacturers or electronic manufacturing services companies. As a result, the Company estimates and records a reserve for future returns and other charges against revenue at the time of shipment consistent with the terms of sale. The reserve is estimated based on historical experience with each respective distributor. These reserves and charges are immaterial as the Company does not not Practical Expedients The Company applies the following practical expedients: - The Company applies the practical expedient for shipping and handling as fulfillment costs. - The Company expenses sales commissions as sales and marketing expenses in the period they are incurred. Shipping Costs Amounts billed to customers related to shipping and handling are included in Net sales, and the Company's shipping and handling costs are included in Manufacturing cost of sales. Stock-Based Compensation The Company measures the cost of employee services in exchange for an award of equity instruments based on the grant-date fair value of the award and recognizes the cost over the requisite service period, typically the vesting period. The Company estimates the fair value of stock options on the grant date using the Black-Scholes-Merton option-pricing model. The Black-Scholes-Merton option-pricing model requires subjective assumptions, including future stock price volatility and expected time to exercise, which greatly affect the calculated values. There is no zero Restricted stock awards are measured at the fair value of the Company's common stock on the date of the grant and recognized over the respective service period. Refer to Note 10 Earnings (Loss) Per Share The Company computes earnings (loss) per share in accordance with ASC Topic 260, Earnings Per Share 260" Refer to Note 12 Treasury Stock All amounts paid to repurchase common stock are recorded as Treasury Stock on the Consolidated Balance Sheets. When Treasury Stock is retired and the purchase price is greater than par, an excess of purchase price over par is allocated between additional paid-in capital and retained earnings (deficit). Share that are retired are determined on a FIFO basis. Income Taxes The Company's deferred income tax assets represent temporary differences between the financial statement carrying amount and the income tax basis of existing assets and liabilities that will result in deductible amounts in future years. The Company periodically undertakes a review of its valuation allowance, and it evaluates all positive and negative factors that may not 740, Income Taxes 740" two first not second 50% may may In the ordinary course of business, we are examined by various federal, state, and foreign tax authorities. We regularly assess the potential outcomes of these examinations and any future examinations for the current or prior years in determining the adequacy of our provision for income taxes. Refer to Note 9 Impairments of Long-Lived Assets Long-lived assets, including intangible assets subject to amortization, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the asset may not We performed an assessment to determine if there were any indicators of impairment quarterly, including as of December 31, 2023 not no Financial Instruments Cash and cash equivalents, trade accounts receivable, trade accounts payable and accrued expenses are carried at cost which approximates fair value due to the short-term maturity of these instruments. Concentration Risks In 2023 second 2022 second December 31, 2023 2022 A significant portion of the Company's accounts receivable is concentrated with a relatively small number of customers. As of December 31, 2023 two December 31, 2022 two At various times throughout the year ended and as of December 31, 2023 2022 not Segment Information The Company reports segment information in accordance with ASC Topic 280, Segment Information 280" 280 2023, 2 Refer to Note 4 Accounting Standards Adopted Financial Instruments - Credit Losses In June 2016, 2016 13, Financial Instruments-Credit Losses: Measurement of Credit Losses on Financial Instruments" 2016 13" January 1, 2023. January 1, 2023, Future Application of Accounting Standards Segment Reporting In November 2023, 2023 07, Segment Reporting (Topic 280 2023 07" December 15, 2023, December 15, 2024, Income Taxes In December 2023, 2023 09, Income Taxes (Topic 740 2023 09" December 15, 2024, Change in Accounting Principle During 2023, two not

Note 3 - Discontinued Operation

Note 3 - Discontinued Operations	12 Months Ended
	Dec. 31, 2023
Notes to Financial Statements
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]	3. As noted in Note 1 October 7, 2022, 205, Presentation of Financial Statements 205" , Subtopic 20 In connection with the Separation, MtronPTI wrote off $4,439 of intercompany receivables due from LGL Group, which brought intercompany balances to zero. For the year ended December 31, 2023 first 2023 December 31, 2022 fourth 2022 December 31, 2023 2022 The following table summarizes the significant line items included in (Loss) income from discontinued operations, net of tax in the Consolidated Statements of Operations for the periods indicated: Year Ended December 31, 2023 2022 Revenues: Net sales $ — $ 23,529 Total revenues — 23,529 Expenses: Manufacturing cost of sales — 15,164 Engineering, selling and administrative 28 5,870 Total expenses 28 21,034 Operating (loss) income (28 ) 2,495 Interest expense, net — (6 ) Other expense, net — (44 ) (Loss) income from discontinued operations before income taxes (28 ) 2,445 Income tax provision — 560 (Loss) income from discontinued operations, net of tax $ (28 ) $ 1,885 The cash flows related to discontinued operations have not December 31, 2022 October 6, 2022: Period through October 6, 2022 Depreciation $ 496 Amortization of finite-lived intangible assets 42 Stock-based compensation expense 26 Capital expenditures (662 )

Note 4 - Segment Information

Note 4 - Segment Information	12 Months Ended
	Dec. 31, 2023
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	4. We report our results of operations consistent with the manner in which our chief operating decision makers review the business to assess performance and allocate resources. Prior to 2023, During 2023, The Company has now identified two The Electronic Instruments segment includes all products manufactured and sold by PTF. The Merchant Investment segment includes all activity produced by Lynch Capital International, LLC ("Lynch Capital"). The Company includes in Corporate the following corporate and business activities: • corporate level assets and financial obligations such as cash and equivalents invested in highly liquid U.S. Treasury money market funds and other marketable securities; • other items not • intercompany eliminations. Beginning in 2023, The following tables present LGL Group's continuing operations by segment: Year Ended December 31, 2023 Electronic Instruments Merchant Investment Corporate Consolidated Revenues: Net sales $ 1,728 $ — $ — $ 1,728 Net investment income — 869 697 1,566 Net gains — — 384 384 Total revenues 1,728 869 1,081 3,678 Expenses: Manufacturing cost of sales 796 — — 796 Engineering, selling and administrative 780 216 1,240 2,236 Total expenses 1,576 216 1,240 3,032 Income (loss) from continuing operations before income taxes 152 653 (159 ) 646 Income tax expense (benefit) — — 301 301 Income (loss) from continuing operations 152 653 (460 ) 345 Income (loss) from discontinued operations — — (28 ) (28 ) Net income (loss) 152 653 (488 ) 317 Less: Net income attributable to non-controlling interests — 48 — 48 Net income (loss) attributable to LGL Group common stockholders $ 152 $ 605 $ (488 ) $ 269 Year Ended December 31, 2022 Electronic Instruments Merchant Investment Corporate Consolidated Revenues: Net sales $ 1,655 $ — $ — $ 1,655 Net investment income — — 413 413 Net losses — — (4,747 ) (4,747 ) Total revenues 1,655 — (4,334 ) (2,679 ) Expenses: Manufacturing cost of sales 837 — — 837 Engineering, selling and administrative 715 — 2,175 2,890 Total expenses 1,552 — 2,175 3,727 Income (loss) from continuing operations before income taxes 103 — (6,509 ) (6,406 ) Income tax benefit — — (1,529 ) (1,529 ) Income (loss) from continuing operations 103 — (4,980 ) (4,877 ) Income from discontinued operations — — 1,885 1,885 Net income (loss) 103 — (3,095 ) (2,992 ) Less: Net income attributable to non-controlling interests — — — — Net income (loss) attributable to LGL Group common stockholders $ 103 $ — $ (3,095 ) $ (2,992 ) The following table presents LGL Group's year-end identifiable assets and capital expenditures by segment: Year-End Identifiable Assets Capital Expenditures 2023 2022 2023 2022 Electronic Instruments $ 843 $ 1,118 $ — $ — Merchant Investment 23,530 — — — Corporate 17,477 38,667 — — Total $ 41,850 $ 39,785 $ — $ —

Note 5 - Investments

Note 5 - Investments	12 Months Ended
	Dec. 31, 2023
Notes to Financial Statements
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]	5. Marketable Securities Details of marketable securities held as of December 31, 2023 2022 December 31, 2023 Cumulative Unrealized Fair Value Basis (Loss) Gain Equity securities (a) $ 22 $ 34 $ (12 ) Mutual funds (b) — — — Total $ 22 $ 34 $ (12 ) December 31, 2022 Cumulative Unrealized Fair Value Basis (Loss) Gain Equity securities (a) $ 69 $ 4,307 $ (4,238 ) Mutual funds (b) 16,516 16,990 (474 ) Total $ 16,585 $ 21,297 $ (4,712 ) (a) As of December 31, 2022, (b) As of December 31, 2023, not one December 31, 2022, one Net Investment Income Net investment income represents income primarily from the following sources: • Income earned from investments in money market funds (recorded in Cash and cash equivalents) • Dividends received from marketable securities • Income from unconsolidated or equity method investments The following table presents the components of Net investment income: Year Ended December 31, 2023 2022 Interest on cash and cash equivalents $ 1,566 $ 194 Dividends on marketable securities — 219 Net investment income $ 1,566 $ 413 Net Gains (Losses) Net gains and losses are determined by specific identification. The net realized gains and losses are generated primarily from the following sources: • Realized and losses from investments in Marketable securities • Changes in the fair value of investments in Marketable securities • Changes in the fair value of derivatives The following table presents the components of Net gains (losses): Year Ended December 31, 2023 2022 Marketable securities (a) $ 384 $ (4,747 ) Net gains (losses) $ 384 $ (4,747 ) (a) During 2023, Sales of Affiliated Mutual Funds During 2023,

Note 6 - Fair Value Measurement

Note 6 - Fair Value Measurements	12 Months Ended
	Dec. 31, 2023
Notes to Financial Statements
Fair Value Disclosures [Text Block]	6. Fair Value Measurements Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Fair value guidance identifies three Fair Value Hierarchy The fair value hierarchy prioritizes the inputs to valuation techniques used to measure fair value into three 1 3 Classification within the fair value hierarchy is based upon the objectivity of the inputs that are significant to the valuation of an asset or liability as of the measurement date. The three Level 1 Level 2 1 2 not Level 3 may Valuation Methodologies of Financial Instruments Measured at Fair Value Cash and cash equivalents Equity Securities Mutual funds Assets and Liabilities Measured at Fair Value on a Recurring Basis The following table presents information about assets measured at fair value on a recurring basis and indicates the level of the fair value measurement based on the observability of inputs used: December 31, 2023 Level 1 Level 2 Level 3 Total Cash and cash equivalents (a) $ 40,229 $ — $ — $ 40,229 Marketable securities: Equity securities 22 — — 22 Mutual funds — — — — Total marketable securities 22 — — 22 Total $ 40,251 $ — $ — $ 40,251 December 31, 2022 Level 1 Level 2 Level 3 Total Cash and cash equivalents (a) $ 17,722 $ — $ — $ 17,722 Marketable securities: Equity securities 69 — — 69 Mutual funds — 16,516 — 16,516 Total marketable securities 69 16,516 — 16,585 Total $ 17,791 $ 16,516 $ — $ 34,307 (a) As of December 31, 2023 2022 There were no liabilities subject to fair value on a recurring basis as of December 31, 2023 2022 Fair Value Measurements on a Non-Recurring Basis The Company has other assets that may may not 11 As of December 31, 2023 2022 not Fair Value Information about Financial Instruments Not As of December 31, 2023 2022 not

Note 7 - Variable Interest Enti

Note 7 - Variable Interest Entities	12 Months Ended
	Dec. 31, 2023
Notes to Financial Statements
Variable Interest Entity Disclosure [Text Block]	7. Variable Interest Entities The Company holds variable interests in certain entities in the form of equity investments. The Company consolidates an entity under the VIE guidance when it is determined the Company is the primary beneficiary. The Company has no not During June 2023, Consolidated VIEs The Company's only consolidated VIE is LGL Systems. The following table summarizes the assets and liabilities of LGL Systems included in the Consolidated Balance Sheets: December 31, 2023 2022 Assets: Current assets Cash and cash equivalents $ 2,932 $ — Accounts receivable 14 — Total current assets 2,946 — Total assets $ 2,946 $ — Total liabilities $ — $ — As of December 31, 2023 Unconsolidated VIEs The Company's only unconsolidated VIE is LGL Nevada. We calculate our maximum exposure to loss to be (i) the amount invested in the debt or equity of the VIE and (ii) other commitments and guarantees to the VIE. The following table presents the total assets of LGL Nevada as well as the Company's maximum exposure to loss: December 31, 2023 2022 Total assets $ 588 $ — Maximum exposure to loss On-balance sheet (a) 3 — Off-balance sheet (b) — — Total $ 3 $ — (a) As of December 31, 2023, (b) This amount represents our remaining unfunded commitments to LGL Nevada. LGL Systems Nevada Management Partners LLC LGL Nevada was formed in October 2019 four two

Note 8 - Related Party Transact

Note 8 - Related Party Transactions	12 Months Ended
	Dec. 31, 2023
Notes to Financial Statements
Related Party Transactions Disclosure [Text Block]	8. Related Party Transactions In the normal course of business, the Company enters into various transactions with affiliated companies. Parties are considered to be related if one The material agreements whereby the Company generated revenues and expenses with affiliated entities are discussed below: Investment Activity with GAMCO Investors, Inc. Certain balances held and invested in various mutual funds are managed or advised by GAMCO Investors, Inc. or one December 31, 2023 2022 not As of December 31, 2023 December 31, 2022 For the year ended December 31, 2023 Transactions with M-tron Industries, Inc. Transitional Administrative and Management Services Agreement LGL Group and MtronPTI entered into an Amended and Restated Transitional Administrative and Management Services Agreement ("MtronPTI TSA"), which sets out the terms for services to be provided between the two Tax Indemnity and Sharing Agreement LGL Group and MtronPTI entered into a Tax Indemnity and Sharing Agreement ("MtronPTI Tax Agreement"), which sets out the terms for which party would be responsible for taxes imposed on the Company if the Distribution, together with certain related transactions, were to fail to qualify as a tax-free transaction under Internal Revenue Code ("IRC") Sections 355 368 1 For the years ended December 31, 2023 2022 Other Transactions For the years ended December 31, 2023 2022

Note 9 - Income Taxes

Note 9 - Income Taxes	12 Months Ended
	Dec. 31, 2023
Notes to Financial Statements
Income Tax Disclosure [Text Block]	9. Income tax provision (benefit) for the years ended December 31, 2023 2022 Year Ended December 31, 2023 2022 Current tax expense (benefit): Federal $ 42 $ (147 ) State and local 177 209 Total current tax expense 219 62 Deferred tax expense (benefit): Federal 83 (1,411 ) State and local (1 ) (180 ) Total before change in valuation allowance 82 (1,591 ) Change in valuation allowance — — Net deferred tax expense (benefit) 82 (1,591 ) Total income tax expense (benefit) $ 301 $ (1,529 ) Effective Tax Rate A reconciliation of the provision (benefit) for income taxes and the amount computed by applying the statutory federal income tax rate to Income (loss) before income taxes is detailed below: Year Ended December 31, 2023 2022 Income (loss) before income taxes $ 646 $ (6,406 ) Tax rate 21.0 % 21.0 % Income tax expense (benefit) at federal statutory rate 136 (1,344 ) Tax effect of: State taxes, net of federal benefit 57 (114 ) Permanent differences — 43 Noncontrolling interests (10 ) — Change in rate (18 ) (17 ) Change in uncertain tax positions 41 29 Other 95 (126 ) Income tax provision (benefit) $ 301 $ (1,529 ) Effective tax rate 46.5 % 23.9 % Deferred Tax Assets Deferred income taxes for 2023 2022 December 31, 2023 2022 December 31, 2023 2022 Deferred tax assets: Inventory reserve $ 19 $ 12 Allowance for doubtful accounts 15 20 Lease liability 19 31 Unrealized gains on marketable securities 3 166 Stock-based compensation 1 8 Depreciation and amortization 13 11 Federal tax loss carryforwards 77 — Other reserves and accruals 24 17 Total deferred tax assets $ 171 $ 265 Deferred tax liabilities: Right-of-use asset 19 31 Total deferred tax liabilities 19 31 Net deferred tax assets before valuation allowance 152 234 Valuation allowance — — Net deferred tax assets (liabilities) $ 152 $ 234 The evaluation of the recoverability of our deferred tax asset and the need for a valuation allowance requires us to weigh all positive and negative evidence to reach a conclusion that is more likely than not not not As of December 31, 2023 2022 not Uncertain Tax Benefits Significant judgment is required in determining our provision for income taxes. In the ordinary course of business, there are many transactions for which the ultimate tax outcome is uncertain. We review our tax contingencies on a regular basis and make appropriate accruals as necessary. As of December 31, 2023 Year Ended December 31, 2023 2022 Balance, beginning of year $ 637 $ 458 Additions for tax positions of prior years (31 ) 37 Additions based on tax positions related to the current year 72 142 Balance, end of year $ 678 $ 637 The Company will recognize any interest and penalties related to unrecognized tax positions in income tax expense. Net adjustments to accruals for interest and penalties associated with uncertain tax positions were immaterial as of December 31, 2023 not 12 Tax Regulatory Matters The Company files a consolidated U.S. federal income tax return with our eligible subsidiaries. The Company also files income tax returns in various state and local jurisdictions including California, Florida, Massachusetts, New York, and Texas. The statute of limitations for assessment by the Internal Revenue Service ("IRS") and state tax authorities is open for tax returns for years ended December 31, 2019, 2020 2021; 2019, may 2017

Note 10 - Stock-Based Compensat

Note 10 - Stock-Based Compensation	12 Months Ended
	Dec. 31, 2023
Notes to Financial Statements
Share-Based Payment Arrangement [Text Block]	10. On December 28, 2021, 2021 may 2011 December 31, 2023 Restricted stock awards are measured at a value equal to the market price of the Company's common stock on the date of grant which is recognized over the service period of the shares . Option awards are generally granted with an exercise price either at or 10% above the market price of the Company's common stock at the date of grant, which generally have a 5-year contractual terms and vest over three The following table summarizes stock-based compensation expense, which includes expenses related to awards granted under the Plan for the periods indicated: Year Ended December 31, 2023 2022 Restricted stock awards $ 3 $ 362 Stock options — 26 Total $ 3 $ 388 Restricted Stock Awards A summary of the Company's restricted stock awards for the year ended December 31, 2023 (in thousands, except share data) Number of Shares Weighted Average Grant Date Fair Value Aggregate Grant Date Fair value Balance as of December 31, 2022 3,750 $ 9.01 $ 34 Granted 20,118 5.22 105 Vested (3,750 ) 9.01 (34 ) Canceled — — — Balance as of December 31, 2023 20,118 $ 5.22 $ 105 As of December 31, 2023 December 31, 2023 2022 In October 2022,

Note 11 - Stockholders' Equity

Note 11 - Stockholders' Equity	12 Months Ended
	Dec. 31, 2023
Notes to Financial Statements
Equity [Text Block]	11. Stockholders' Equity Shares Authorized On December 28, 2021, Common Stock Warrants On November 16, 2020, November 9, 2020. one November 16, 2025, 30 Pursuant to the warrant agreement, the Distribution was a qualifying dilutive event that required an adjustment to the exercise price and the trigger price for potential acceleration of the exercise date. Effective October 18, 2022, may may Share Repurchase Program On August 29, 2011, 2023 2022 December 31, 2023

Note 12 - Earnings Per Common S

Note 12 - Earnings Per Common Share	12 Months Ended
	Dec. 31, 2023
Notes to Financial Statements
Earnings Per Share [Text Block]	12. Earnings per Common Share The following table presents a reconciliation of Net income (loss) and shares used in calculating basic and diluted net income (loss) per common share for the periods indicated: Year Ended December 31, (in thousands, except for share data) 2023 2022 Numerator for EPS: Income (loss) from continuing operations $ 345 $ (4,877 ) Less: Net income from continuing operations attributable to non-controlling interests 48 — Income (loss) attributable to LGL Group common stockholders from continuing operations 297 (4,877 ) (Loss) income from discontinued operations, net of tax (28 ) 1,885 Net income (loss) attributable to LGL Group common stockholders $ 269 $ (2,992 ) Denominator for EPS: Weighted average common shares outstanding - basic 5,352,937 5,338,417 Dilutive effects (a) Stock options — 45,249 Weighted average common shares outstanding - diluted 5,352,937 5,383,666 Income (loss) per common share attributable to LGL Group common stockholders: Basic: Income (loss) from continuing operations $ 0.06 $ (0.91 ) (Loss) income from discontinued operations (0.01 ) 0.35 Net income (loss) attributable to LGL Group common stockholders $ 0.05 $ (0.56 ) Diluted: Income (loss) from continuing operations $ 0.06 $ (0.91 ) (Loss) income from discontinued operations (0.01 ) 0.35 Net income (loss) attributable to LGL Group common stockholders $ 0.05 $ (0.56 ) (a) For the year ended December 31, 2023 December 31, 2022 December 31, 2023 2022 11

Note 13 - Leases

Note 13 - Leases	12 Months Ended
	Dec. 31, 2023
Notes to Financial Statements
Lessee, Operating Leases [Text Block]	13. The Company leases certain manufacturing and office space and equipment. We determine if an arrangement is a lease at inception. A contract is or contains a lease if the contract conveys the right to control the use of identified property, plant or equipment (an identified asset) for a period of time in exchange for consideration. Amounts associated with operating leases, which are not 12 not The Company leases certain property and equipment under operating leases with terms that range from one five not Total operating lease costs amounted to $74 and $69 for the years ended December 31, 2023 2022 As of December 31, 2023 2022 December 31, 2023 2022 December 31, 2023 2022 Future minimum lease payment obligations under operating leases are as follows: 2024 64 2025 15 Total lease payments 79 Less: interest (4 ) Net lease payments $ 75

Note 14 - Contingencies

Note 14 - Contingencies	12 Months Ended
	Dec. 31, 2023
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	14. In the normal course of business, the Company and its subsidiaries may not none

Note 15 - Other Financial State

Note 15 - Other Financial Statement Information	12 Months Ended
	Dec. 31, 2023
Notes to Financial Statements
Supplemental Balance Sheet Disclosures [Text Block]	15. Inventories, Net The Company reduces the value of its inventories to net realizable value when the net realizable value is believed to be less than the cost of the item. The components of inventory as of December 31, 2023 2022 December 31, 2023 2022 Raw materials $ 271 $ 307 Work in process 9 7 Total gross inventory 280 314 Reserve for excess and obsolete inventory (76 ) (49 ) Inventories, net $ 204 $ 265 Property, Plant and Equipment, Net The components of property, plant and equipment as of December 31, 2023 2022 December 31, 2023 2022 Machinery and equipment $ 639 $ 639 Gross property, plant and equipment 639 639 Less: Accumulated depreciation (639 ) (638 ) Property, plant and equipment, net $ — $ 1 Intangible Assets, Net The components of intangible assets as of December 31, 2023 2022 December 31, 2023 2022 Intellectual property $ 214 $ 214 Gross intangible assets 214 214 Less: Accumulated amortization (157 ) (136 ) Intangible assets, net $ 57 $ 78

Note 16 - Domestic and Foreign

Note 16 - Domestic and Foreign Revenues	12 Months Ended
	Dec. 31, 2023
Notes to Financial Statements
Revenue from Contract with Customer [Text Block]	16. Significant foreign revenues from operations ( 10% Year Ended December 31, 2023 2022 Spain $ 330 $ 65 Canada 137 54 France 33 142 Romania — 100 All other foreign countries 175 99 Total foreign revenues $ 675 $ 460 Total domestic revenues $ 1,053 $ 1,195 The Company allocates its foreign revenue based on the customer’s ship-to location.

Note 17 - Quarterly Financial D

Note 17 - Quarterly Financial Data (Unaudited)	12 Months Ended
	Dec. 31, 2023
Notes to Financial Statements
Quarterly Financial Information [Text Block]	17. The following table provides summarized quarterly financial data for the year ended December 31, 2023 Three months ended (in thousands, except share data) March 31, 2023 June 30, 2023 September 30, 2023 December 31, 2023 Revenues: Net sales $ 441 $ 403 $ 438 $ 446 Net investment income 198 275 544 549 Net gains (losses) (a) 345 43 (4 ) — Total revenues 984 721 978 995 Expenses: Manufacturing cost of sales 192 208 195 201 Engineering, selling and administrative 542 645 584 465 Total expenses 734 853 779 666 Income (loss) from continuing operations before income taxes 250 (132 ) 199 329 Income tax expense (benefit) 65 (2 ) 69 169 Net income (loss) from continuing operations 185 (130 ) 130 160 Loss from discontinued operations, net of tax (28 ) — — — Net income (loss) 157 (130 ) 130 160 Less: Net income attributable to non-controlling interests — — 22 26 Net income (loss) attributable to LGL Group common stockholders $ 157 $ (130 ) $ 108 $ 134 Income (loss) per common share attributable to LGL Group common stockholders: Basic (b) Income (loss) from continuing operations $ 0.03 $ (0.02 ) $ 0.02 $ 0.03 Loss from discontinued operations (0.01 ) — — — Net income (loss) attributable to LGL Group common stockholders $ 0.03 $ (0.02 ) $ 0.02 $ 0.03 Diluted (b) Income (loss) from continuing operations $ 0.03 $ (0.02 ) $ 0.02 $ 0.02 Loss from discontinued operations (0.01 ) — — — Net income (loss) attributable to LGL Group common stockholders $ 0.03 $ (0.02 ) $ 0.02 $ 0.02 Weighted average shares outstanding: Basic 5,352,937 5,352,937 5,352,937 5,352,937 Diluted 5,352,937 5,352,937 5,355,006 5,381,685 (a) During Q1 Q2 2023, (b) Basic and diluted earnings per share are calculated using actual, unrounded amounts. Therefore, (i) the components of earnings per share may not the quarterly earnings per share may not The following table provides summarized quarterly financial data for the year ended December 31, 2022 Three months ended (in thousands, except share data) March 31, 2022 June 30, 2022 September 30, 2022 December 31, 2022 Revenues: Net sales $ 417 $ 370 $ 344 $ 524 Net investment (loss) income (3 ) 10 54 352 Net gains (losses) (a) 45 (2,373 ) (2,121 ) (298 ) Total revenues 459 (1,993 ) (1,723 ) 578 Expenses: Manufacturing cost of sales 242 227 203 165 Engineering, selling and administrative 1,022 623 669 576 Total expenses 1,264 850 872 741 Loss from continuing operations before income taxes (805 ) (2,843 ) (2,595 ) (163 ) Income tax benefit (166 ) (588 ) (611 ) (164 ) (Loss) income from continuing operations (639 ) (2,255 ) (1,984 ) 1 Income from discontinued operations, net of tax 808 457 488 132 Net income (loss) 169 (1,798 ) (1,496 ) 133 Less: Net income attributable to non-controlling interests — — — — Net income (loss) attributable to LGL Group common stockholders $ 169 $ (1,798 ) $ (1,496 ) $ 133 Income (loss) per common share attributable to LGL Group common shareholders: Basic (b) (Loss) income from continuing operations $ (0.12 ) $ (0.42 ) $ (0.37 ) $ 0.00 Income from discontinued operations 0.15 0.09 0.09 0.02 Net income (loss) attributable to LGL Group common stockholders $ 0.03 $ (0.34 ) $ (0.28 ) $ 0.02 Diluted (b) (Loss) income from continuing operations $ (0.12 ) $ (0.42 ) $ (0.37 ) $ 0.00 Income from discontinued operations 0.15 0.09 0.09 0.02 Net income (loss) attributable to LGL Group common stockholders $ 0.03 $ (0.34 ) $ (0.28 ) $ 0.02 Weighted average shares outstanding: Basic 5,323,973 5,334,187 5,346,043 5,349,187 Diluted 5,345,202 5,334,187 5,346,043 5,356,188 (a) During Q2 Q3, (b) Basic and diluted earnings per share are calculated using actual, unrounded amounts. Therefore, (i) the components of earnings per share may not may not

Note 18 - Subsequent Events

Note 18 - Subsequent Events	12 Months Ended
	Dec. 31, 2023
Notes to Financial Statements
Subsequent Events [Text Block]	18. The Company has evaluated events and transactions that occurred after the balance sheet date through the date that the consolidated financial statements were issued. Based upon this review, the Company did not

Significant Accounting Policies

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2023
Accounting Policies [Abstract]
Consolidation, Policy [Policy Text Block]	Principles of Consolidation In the normal course of business, the Company invests in or has transactions with limited membership entities or other entities. These entities are considered to be either VIEs or voting interest entities ("VOEs"). The consolidation guidance requires an assessment involving judgments and analysis to determine (a) whether an entity in which the Company holds a variable interest is a VIE and (b) whether the Company's involvement, through holding interests directly or indirectly in the entity or contractually through other variable interests, would give it a controlling financial interest. The Company consolidates entities in which it, directly or indirectly, is determined to have a controlling financial interest. • VIEs not • VOEs not 50% The Company reviews its evaluation of whether an entity is a VIE as well as its consolidation conclusions quarterly to identify whether any reconsideration events have occurred. During June 2023, As of December 31, 2023 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 (a) Entity is a consolidated VIE (b) Entity is an unconsolidated VIE Refer to Note 7 Equity Method Investments When the Company does not 20% 50% Non-Controlling Interests Non-controlling interests represent the interests of shareholders, other than the Company, in consolidated entities. Net income (loss) attributable to non-controlling interests represents such shareholders' interests in the earnings and loss of those entities, or the attribution of results from consolidated VIEs to which the Company is not The portion of the equity interest in LGL Systems the Company does not
Use of Estimates, Policy [Policy Text Block]	Uses of Estimates The preparation of the consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates.
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash and Cash Equivalents Cash and cash equivalents consist of cash on hand and highly liquid investments with no three
Marketable Securities, Policy [Policy Text Block]	Marketable Securities The Company accounts for equity securities under Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") Topic 321, Investments - Equity Securities 321" Realized and unrealized gains and losses on investments in Marketable securities are recorded in Net gains (losses) on the Consolidated Statement of Operations. Refer to Note 5
Accounts Receivable [Policy Text Block]	Accounts Receivable Accounts receivable consists principally of amounts due from both domestic and foreign customers. Credit is extended based on an evaluation of the customer's financial condition and collateral is not The Company maintains an allowance for credit losses for estimated uncollectible accounts receivable. Our reserves for estimated credit losses are based upon historical experience, specific customer collection issues, current conditions and reasonable and supportable forecasts that affect the collectability of the remaining cash flows over the contract terms of our receivables. Accounts are written off against the allowance account they are determined to no
Inventory, Policy [Policy Text Block]	Inventories Inventories are valued at the lower of cost or net realizable value using the first first The Company maintains a reserve for inventory based on estimated losses that result from inventory that becomes obsolete or for which the Company has excess inventory levels. In determining these estimates, the Company performs an analysis on current demand and usage for each inventory item over historical time periods. Based on that analysis, the Company reserves a percentage of the inventory amount within each time period based on historical demand and usage patterns of specific items in inventory. Refer to Note 15
Property, Plant and Equipment, Impairment [Policy Text Block]	Machinery and Equipment, Net Property, plant and equipment are recorded at cost less accumulated depreciation and include expenditures for major improvements. Maintenance and repairs are charged to operations as incurred. Depreciation is computed for financial reporting purposes using the straight-line method over the estimated useful lives of the assets from 3 years to 10 years for other fixed assets. Property, plant and equipment are periodically reviewed for indicators of impairment. If any such indicators were noted, the Company would assess the appropriateness of the assets' carrying value and record any impairment at that time. Refer to Note 15
Goodwill and Intangible Assets, Policy [Policy Text Block]	Intangible Assets Intangible assets are recorded at cost less accumulated amortization. Amortization is computed for financial reporting purposes using the straight-line method over the estimated useful lives of the assets, which range up to 10 years. The intangible assets consist of intellectual property. The estimated aggregate amortization expense for intangible assets for each of the remaining years of the estimated useful life is as follows: Year Amount 2024 21 2025 21 2026 15 Total $ 57
Standard Product Warranty, Policy [Policy Text Block]	Warranties The Company offers a standard one may not not not Each month, the Company records a specific warranty reserve for approved RMAs covering products that have not not not
Revenue from Contract with Customer [Policy Text Block]	Revenue Recognition for Sales to Customers The Company recognizes revenue from the sale of its products in accordance with the criteria in ASC Topic 606, Revenue from Contracts with Customers 606" Step 1: Step 2: Step 3: Step 4: Step 5: The Company meets these conditions upon the Company’s satisfaction of the performance obligation, usually at the time of shipment to the customer, because control passes to the customer at that time. Our standard payment terms for customers are net due within 30 none 60 The Company provides disaggregated revenue details by geographic markets in Note 16 The Company offers a limited right of return and/or authorized price protection provisions in its agreements with certain electronic component distributors who resell the Company's products to original equipment manufacturers or electronic manufacturing services companies. As a result, the Company estimates and records a reserve for future returns and other charges against revenue at the time of shipment consistent with the terms of sale. The reserve is estimated based on historical experience with each respective distributor. These reserves and charges are immaterial as the Company does not not Practical Expedients The Company applies the following practical expedients: - The Company applies the practical expedient for shipping and handling as fulfillment costs. - The Company expenses sales commissions as sales and marketing expenses in the period they are incurred.
Shipping Costs Policy [Text Block]	Shipping Costs Amounts billed to customers related to shipping and handling are included in Net sales, and the Company's shipping and handling costs are included in Manufacturing cost of sales.
Share-Based Payment Arrangement [Policy Text Block]	Stock-Based Compensation The Company measures the cost of employee services in exchange for an award of equity instruments based on the grant-date fair value of the award and recognizes the cost over the requisite service period, typically the vesting period. The Company estimates the fair value of stock options on the grant date using the Black-Scholes-Merton option-pricing model. The Black-Scholes-Merton option-pricing model requires subjective assumptions, including future stock price volatility and expected time to exercise, which greatly affect the calculated values. There is no zero Restricted stock awards are measured at the fair value of the Company's common stock on the date of the grant and recognized over the respective service period. Refer to Note 10
Earnings Per Share, Policy [Policy Text Block]	Earnings (Loss) Per Share The Company computes earnings (loss) per share in accordance with ASC Topic 260, Earnings Per Share 260" Refer to Note 12
Stockholders' Equity, Policy [Policy Text Block]	Treasury Stock All amounts paid to repurchase common stock are recorded as Treasury Stock on the Consolidated Balance Sheets. When Treasury Stock is retired and the purchase price is greater than par, an excess of purchase price over par is allocated between additional paid-in capital and retained earnings (deficit). Share that are retired are determined on a FIFO basis.
Income Tax, Policy [Policy Text Block]	Income Taxes The Company's deferred income tax assets represent temporary differences between the financial statement carrying amount and the income tax basis of existing assets and liabilities that will result in deductible amounts in future years. The Company periodically undertakes a review of its valuation allowance, and it evaluates all positive and negative factors that may not 740, Income Taxes 740" two first not second 50% may may In the ordinary course of business, we are examined by various federal, state, and foreign tax authorities. We regularly assess the potential outcomes of these examinations and any future examinations for the current or prior years in determining the adequacy of our provision for income taxes. Refer to Note 9
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]	Impairments of Long-Lived Assets Long-lived assets, including intangible assets subject to amortization, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the asset may not We performed an assessment to determine if there were any indicators of impairment quarterly, including as of December 31, 2023 not no
Fair Value of Financial Instruments, Policy [Policy Text Block]	Financial Instruments Cash and cash equivalents, trade accounts receivable, trade accounts payable and accrued expenses are carried at cost which approximates fair value due to the short-term maturity of these instruments.
Concentration Risk, Credit Risk, Policy [Policy Text Block]	Concentration Risks In 2023 second 2022 second December 31, 2023 2022 A significant portion of the Company's accounts receivable is concentrated with a relatively small number of customers. As of December 31, 2023 two December 31, 2022 two At various times throughout the year ended and as of December 31, 2023 2022 not
Segment Reporting, Policy [Policy Text Block]	Segment Information The Company reports segment information in accordance with ASC Topic 280, Segment Information 280" 280 2023, 2 Refer to Note 4
New Accounting Pronouncements, Policy [Policy Text Block]	Accounting Standards Adopted Financial Instruments - Credit Losses In June 2016, 2016 13, Financial Instruments-Credit Losses: Measurement of Credit Losses on Financial Instruments" 2016 13" January 1, 2023. January 1, 2023, Future Application of Accounting Standards Segment Reporting In November 2023, 2023 07, Segment Reporting (Topic 280 2023 07" December 15, 2023, December 15, 2024, Income Taxes In December 2023, 2023 09, Income Taxes (Topic 740 2023 09" December 15, 2024, Change in Accounting Principle During 2023, two not

Note 2 - Summary of Significa_2

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

Note 3 - Discontinued Operati_2

Note 3 - Discontinued Operations (Tables)	12 Months Ended
	Dec. 31, 2023
Notes Tables
Disposal Groups, Including Discontinued Operations [Table Text Block]	Year Ended December 31, 2023 2022 Revenues: Net sales $ — $ 23,529 Total revenues — 23,529 Expenses: Manufacturing cost of sales — 15,164 Engineering, selling and administrative 28 5,870 Total expenses 28 21,034 Operating (loss) income (28 ) 2,495 Interest expense, net — (6 ) Other expense, net — (44 ) (Loss) income from discontinued operations before income taxes (28 ) 2,445 Income tax provision — 560 (Loss) income from discontinued operations, net of tax $ (28 ) $ 1,885 Period through October 6, 2022 Depreciation $ 496 Amortization of finite-lived intangible assets 42 Stock-based compensation expense 26 Capital expenditures (662 )

Note 4 - Segment Information (T

Note 4 - Segment Information (Tables)	12 Months Ended
	Dec. 31, 2023
Notes Tables
Schedule of Segment Reporting Information, by Segment [Table Text Block]	Year Ended December 31, 2023 Electronic Instruments Merchant Investment Corporate Consolidated Revenues: Net sales $ 1,728 $ — $ — $ 1,728 Net investment income — 869 697 1,566 Net gains — — 384 384 Total revenues 1,728 869 1,081 3,678 Expenses: Manufacturing cost of sales 796 — — 796 Engineering, selling and administrative 780 216 1,240 2,236 Total expenses 1,576 216 1,240 3,032 Income (loss) from continuing operations before income taxes 152 653 (159 ) 646 Income tax expense (benefit) — — 301 301 Income (loss) from continuing operations 152 653 (460 ) 345 Income (loss) from discontinued operations — — (28 ) (28 ) Net income (loss) 152 653 (488 ) 317 Less: Net income attributable to non-controlling interests — 48 — 48 Net income (loss) attributable to LGL Group common stockholders $ 152 $ 605 $ (488 ) $ 269 Year Ended December 31, 2022 Electronic Instruments Merchant Investment Corporate Consolidated Revenues: Net sales $ 1,655 $ — $ — $ 1,655 Net investment income — — 413 413 Net losses — — (4,747 ) (4,747 ) Total revenues 1,655 — (4,334 ) (2,679 ) Expenses: Manufacturing cost of sales 837 — — 837 Engineering, selling and administrative 715 — 2,175 2,890 Total expenses 1,552 — 2,175 3,727 Income (loss) from continuing operations before income taxes 103 — (6,509 ) (6,406 ) Income tax benefit — — (1,529 ) (1,529 ) Income (loss) from continuing operations 103 — (4,980 ) (4,877 ) Income from discontinued operations — — 1,885 1,885 Net income (loss) 103 — (3,095 ) (2,992 ) Less: Net income attributable to non-controlling interests — — — — Net income (loss) attributable to LGL Group common stockholders $ 103 $ — $ (3,095 ) $ (2,992 )
Reconciliation of Assets from Segment to Consolidated [Table Text Block]	Year-End Identifiable Assets Capital Expenditures 2023 2022 2023 2022 Electronic Instruments $ 843 $ 1,118 $ — $ — Merchant Investment 23,530 — — — Corporate 17,477 38,667 — — Total $ 41,850 $ 39,785 $ — $ —

Note 5 - Investments (Tables)

Note 5 - Investments (Tables)	12 Months Ended
	Dec. 31, 2023
Notes Tables
Marketable Securities [Table Text Block]	December 31, 2023 Cumulative Unrealized Fair Value Basis (Loss) Gain Equity securities (a) $ 22 $ 34 $ (12 ) Mutual funds (b) — — — Total $ 22 $ 34 $ (12 ) December 31, 2022 Cumulative Unrealized Fair Value Basis (Loss) Gain Equity securities (a) $ 69 $ 4,307 $ (4,238 ) Mutual funds (b) 16,516 16,990 (474 ) Total $ 16,585 $ 21,297 $ (4,712 )
Investment Income [Table Text Block]	Year Ended December 31, 2023 2022 Interest on cash and cash equivalents $ 1,566 $ 194 Dividends on marketable securities — 219 Net investment income $ 1,566 $ 413
Gain (Loss) on Securities [Table Text Block]	Year Ended December 31, 2023 2022 Marketable securities (a) $ 384 $ (4,747 ) Net gains (losses) $ 384 $ (4,747 )

Note 6 - Fair Value Measureme_2

Note 6 - Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2023
Notes Tables
Fair Value, Assets Measured on Recurring Basis [Table Text Block]	December 31, 2023 Level 1 Level 2 Level 3 Total Cash and cash equivalents (a) $ 40,229 $ — $ — $ 40,229 Marketable securities: Equity securities 22 — — 22 Mutual funds — — — — Total marketable securities 22 — — 22 Total $ 40,251 $ — $ — $ 40,251 December 31, 2022 Level 1 Level 2 Level 3 Total Cash and cash equivalents (a) $ 17,722 $ — $ — $ 17,722 Marketable securities: Equity securities 69 — — 69 Mutual funds — 16,516 — 16,516 Total marketable securities 69 16,516 — 16,585 Total $ 17,791 $ 16,516 $ — $ 34,307

Note 7 - Variable Interest En_2

Note 7 - Variable Interest Entities (Tables)	12 Months Ended
	Dec. 31, 2023
Notes Tables
Schedule of Variable Interest Entities [Table Text Block]	December 31, 2023 2022 Assets: Current assets Cash and cash equivalents $ 2,932 $ — Accounts receivable 14 — Total current assets 2,946 — Total assets $ 2,946 $ — Total liabilities $ — $ — December 31, 2023 2022 Total assets $ 588 $ — Maximum exposure to loss On-balance sheet (a) 3 — Off-balance sheet (b) — — Total $ 3 $ —

Note 9 - Income Taxes (Tables)

Note 9 - Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2023
Notes Tables
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	Year Ended December 31, 2023 2022 Current tax expense (benefit): Federal $ 42 $ (147 ) State and local 177 209 Total current tax expense 219 62 Deferred tax expense (benefit): Federal 83 (1,411 ) State and local (1 ) (180 ) Total before change in valuation allowance 82 (1,591 ) Change in valuation allowance — — Net deferred tax expense (benefit) 82 (1,591 ) Total income tax expense (benefit) $ 301 $ (1,529 )
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	Year Ended December 31, 2023 2022 Income (loss) before income taxes $ 646 $ (6,406 ) Tax rate 21.0 % 21.0 % Income tax expense (benefit) at federal statutory rate 136 (1,344 ) Tax effect of: State taxes, net of federal benefit 57 (114 ) Permanent differences — 43 Noncontrolling interests (10 ) — Change in rate (18 ) (17 ) Change in uncertain tax positions 41 29 Other 95 (126 ) Income tax provision (benefit) $ 301 $ (1,529 ) Effective tax rate 46.5 % 23.9 %
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	December 31, 2023 2022 Deferred tax assets: Inventory reserve $ 19 $ 12 Allowance for doubtful accounts 15 20 Lease liability 19 31 Unrealized gains on marketable securities 3 166 Stock-based compensation 1 8 Depreciation and amortization 13 11 Federal tax loss carryforwards 77 — Other reserves and accruals 24 17 Total deferred tax assets $ 171 $ 265 Deferred tax liabilities: Right-of-use asset 19 31 Total deferred tax liabilities 19 31 Net deferred tax assets before valuation allowance 152 234 Valuation allowance — — Net deferred tax assets (liabilities) $ 152 $ 234
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]	Year Ended December 31, 2023 2022 Balance, beginning of year $ 637 $ 458 Additions for tax positions of prior years (31 ) 37 Additions based on tax positions related to the current year 72 142 Balance, end of year $ 678 $ 637

Note 10 - Stock-Based Compens_2

Note 10 - Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2023
Notes Tables
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]	Year Ended December 31, 2023 2022 Restricted stock awards $ 3 $ 362 Stock options — 26 Total $ 3 $ 388
Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]	(in thousands, except share data) Number of Shares Weighted Average Grant Date Fair Value Aggregate Grant Date Fair value Balance as of December 31, 2022 3,750 $ 9.01 $ 34 Granted 20,118 5.22 105 Vested (3,750 ) 9.01 (34 ) Canceled — — — Balance as of December 31, 2023 20,118 $ 5.22 $ 105

Note 12 - Earnings Per Common_2

Note 12 - Earnings Per Common Share (Tables)	12 Months Ended
	Dec. 31, 2023
Notes Tables
Schedule of Weighted Average Number of Shares [Table Text Block]	Year Ended December 31, (in thousands, except for share data) 2023 2022 Numerator for EPS: Income (loss) from continuing operations $ 345 $ (4,877 ) Less: Net income from continuing operations attributable to non-controlling interests 48 — Income (loss) attributable to LGL Group common stockholders from continuing operations 297 (4,877 ) (Loss) income from discontinued operations, net of tax (28 ) 1,885 Net income (loss) attributable to LGL Group common stockholders $ 269 $ (2,992 ) Denominator for EPS: Weighted average common shares outstanding - basic 5,352,937 5,338,417 Dilutive effects (a) Stock options — 45,249 Weighted average common shares outstanding - diluted 5,352,937 5,383,666 Income (loss) per common share attributable to LGL Group common stockholders: Basic: Income (loss) from continuing operations $ 0.06 $ (0.91 ) (Loss) income from discontinued operations (0.01 ) 0.35 Net income (loss) attributable to LGL Group common stockholders $ 0.05 $ (0.56 ) Diluted: Income (loss) from continuing operations $ 0.06 $ (0.91 ) (Loss) income from discontinued operations (0.01 ) 0.35 Net income (loss) attributable to LGL Group common stockholders $ 0.05 $ (0.56 )

Note 13 - Leases (Tables)

Note 13 - Leases (Tables)	12 Months Ended
	Dec. 31, 2023
Notes Tables
Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]	2024 64 2025 15 Total lease payments 79 Less: interest (4 ) Net lease payments $ 75

Note 15 - Other Financial Sta_2

Note 15 - Other Financial Statement Information (Tables)	12 Months Ended
	Dec. 31, 2023
Notes Tables
Schedule of Inventory, Current [Table Text Block]	December 31, 2023 2022 Raw materials $ 271 $ 307 Work in process 9 7 Total gross inventory 280 314 Reserve for excess and obsolete inventory (76 ) (49 ) Inventories, net $ 204 $ 265
Property, Plant and Equipment [Table Text Block]	December 31, 2023 2022 Machinery and equipment $ 639 $ 639 Gross property, plant and equipment 639 639 Less: Accumulated depreciation (639 ) (638 ) Property, plant and equipment, net $ — $ 1
Schedule of Finite-Lived Intangible Assets [Table Text Block]	December 31, 2023 2022 Intellectual property $ 214 $ 214 Gross intangible assets 214 214 Less: Accumulated amortization (157 ) (136 ) Intangible assets, net $ 57 $ 78

Note 16 - Domestic and Foreig_2

Note 16 - Domestic and Foreign Revenues (Tables)	12 Months Ended
	Dec. 31, 2023
Notes Tables
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]	Year Ended December 31, 2023 2022 Spain $ 330 $ 65 Canada 137 54 France 33 142 Romania — 100 All other foreign countries 175 99 Total foreign revenues $ 675 $ 460 Total domestic revenues $ 1,053 $ 1,195

Note 17 - Quarterly Financial_2

Note 17 - Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2023
Notes Tables
Quarterly Financial Information [Table Text Block]	Three months ended (in thousands, except share data) March 31, 2023 June 30, 2023 September 30, 2023 December 31, 2023 Revenues: Net sales $ 441 $ 403 $ 438 $ 446 Net investment income 198 275 544 549 Net gains (losses) (a) 345 43 (4 ) — Total revenues 984 721 978 995 Expenses: Manufacturing cost of sales 192 208 195 201 Engineering, selling and administrative 542 645 584 465 Total expenses 734 853 779 666 Income (loss) from continuing operations before income taxes 250 (132 ) 199 329 Income tax expense (benefit) 65 (2 ) 69 169 Net income (loss) from continuing operations 185 (130 ) 130 160 Loss from discontinued operations, net of tax (28 ) — — — Net income (loss) 157 (130 ) 130 160 Less: Net income attributable to non-controlling interests — — 22 26 Net income (loss) attributable to LGL Group common stockholders $ 157 $ (130 ) $ 108 $ 134 Income (loss) per common share attributable to LGL Group common stockholders: Basic (b) Income (loss) from continuing operations $ 0.03 $ (0.02 ) $ 0.02 $ 0.03 Loss from discontinued operations (0.01 ) — — — Net income (loss) attributable to LGL Group common stockholders $ 0.03 $ (0.02 ) $ 0.02 $ 0.03 Diluted (b) Income (loss) from continuing operations $ 0.03 $ (0.02 ) $ 0.02 $ 0.02 Loss from discontinued operations (0.01 ) — — — Net income (loss) attributable to LGL Group common stockholders $ 0.03 $ (0.02 ) $ 0.02 $ 0.02 Weighted average shares outstanding: Basic 5,352,937 5,352,937 5,352,937 5,352,937 Diluted 5,352,937 5,352,937 5,355,006 5,381,685 Three months ended (in thousands, except share data) March 31, 2022 June 30, 2022 September 30, 2022 December 31, 2022 Revenues: Net sales $ 417 $ 370 $ 344 $ 524 Net investment (loss) income (3 ) 10 54 352 Net gains (losses) (a) 45 (2,373 ) (2,121 ) (298 ) Total revenues 459 (1,993 ) (1,723 ) 578 Expenses: Manufacturing cost of sales 242 227 203 165 Engineering, selling and administrative 1,022 623 669 576 Total expenses 1,264 850 872 741 Loss from continuing operations before income taxes (805 ) (2,843 ) (2,595 ) (163 ) Income tax benefit (166 ) (588 ) (611 ) (164 ) (Loss) income from continuing operations (639 ) (2,255 ) (1,984 ) 1 Income from discontinued operations, net of tax 808 457 488 132 Net income (loss) 169 (1,798 ) (1,496 ) 133 Less: Net income attributable to non-controlling interests — — — — Net income (loss) attributable to LGL Group common stockholders $ 169 $ (1,798 ) $ (1,496 ) $ 133 Income (loss) per common share attributable to LGL Group common shareholders: Basic (b) (Loss) income from continuing operations $ (0.12 ) $ (0.42 ) $ (0.37 ) $ 0.00 Income from discontinued operations 0.15 0.09 0.09 0.02 Net income (loss) attributable to LGL Group common stockholders $ 0.03 $ (0.34 ) $ (0.28 ) $ 0.02 Diluted (b) (Loss) income from continuing operations $ (0.12 ) $ (0.42 ) $ (0.37 ) $ 0.00 Income from discontinued operations 0.15 0.09 0.09 0.02 Net income (loss) attributable to LGL Group common stockholders $ 0.03 $ (0.34 ) $ (0.28 ) $ 0.02 Weighted average shares outstanding: Basic 5,323,973 5,334,187 5,346,043 5,349,187 Diluted 5,345,202 5,334,187 5,346,043 5,356,188

Note 1 - Basis of Presentation

Note 1 - Basis of Presentation (Details Textual)	Oct. 07, 2022 shares
Mtron Industries Inc [Member]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	0%
Spinoff [Member] | Mtron Industries Inc [Member]
Percentage of Shares Distribution Under Spinoff	100%
Right to Receive Common Stock Share for Each Share (in shares)	0.5

Note 2 - Summary of Significa_3

Note 2 - Summary of Significant Accounting Policies (Details Textual) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2023 USD ($)	Sep. 30, 2023 USD ($)	Jun. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Sep. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Revenue from Contract with Customer, Excluding Assessed Tax	$ 446	$ 438	$ 403	$ 441	$ 524	$ 344	$ 370	$ 417	$ 1,728	$ 1,655
Revenue from Contract with Customer Benchmark [Member] | Customer Concentration Risk [Member] | Largest Customer [Member]
Revenue from Contract with Customer, Excluding Assessed Tax									$ 399	$ 312
Concentration Risk, Percentage									23.10%	18.90%
Revenue from Contract with Customer Benchmark [Member] | Customer Concentration Risk [Member] | Second Largest Customer [Member]
Revenue from Contract with Customer, Excluding Assessed Tax									$ 236	$ 195
Concentration Risk, Percentage									13.70%	11.80%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Two largest Customers [Member]
Concentration Risk, Percentage									28.40%	62.60%
Number of Customers	2				2				2	2
Accounts Receivable, after Allowance for Credit Loss	$ 118				$ 394				$ 118	$ 394
Maximum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	10 years								10 years
Other Capitalized Property Plant and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	3 years								3 years
Other Capitalized Property Plant and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	10 years								10 years

Note 2 - Summary of Significa_4

Note 2 - Summary of Significant Accounting Policies - Subsidiaries (Details)	12 Months Ended
	Dec. 31, 2023
Precise Time and Frequency, LLC [Member] | DELAWARE
Ownership Percentage, Parent	100%
P3 Logistic Solutions LLC [Member] | DELAWARE
Ownership Percentage, Parent	100%
Lynch Capital International, LLC [Member] | DELAWARE
Ownership Percentage, Parent	100%
LGL Systems Acquisition Holding Company, LLC [Member] | DELAWARE
Ownership Percentage, VIE	34.80%	[1]
Lynch Systems Acquisition Holdings Company, LLC [Member] | DELAWARE
Ownership Percentage, Parent	100%
L G L Systems Nevada Management Partners L L C [Member] | NEVADA
Ownership Percentage, Parent	1%	[2]
[1]Entity is a consolidated VIE[2]Entity is an unconsolidated VIE

Note 2 - Summary of Significa_5

Note 2 - Summary of Significant Accounting Policies - Intangible Asset Amortization Expense (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
2024	$ 21
2025	21
2026	15
Total	$ 57	$ 78

Note 3 - Discontinued Operati_3

Note 3 - Discontinued Operations (Details Textual) - Spinoff [Member] - Mtron Industries Inc [Member] - USD ($) $ in Thousands		12 Months Ended
	Oct. 07, 2022	Dec. 31, 2023	Dec. 31, 2022
Write Off of Intercompany Receivables	$ 4,439
Spin Off Costs		$ 56	$ 638
Excess Separation Costs		$ 28	219
Separation Costs, Net.			$ 419

Note 3 - Discontinued Operati_4

Note 3 - Discontinued Operations - Financial Statement Information (Details) - USD ($) $ in Thousands	3 Months Ended								9 Months Ended	12 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Oct. 06, 2022	Dec. 31, 2023	Dec. 31, 2022
(Loss) income from discontinued operations, net of tax	$ 0	$ 0	$ 0	$ (28)	$ 132	$ 488	$ 457	$ 808		$ (28)	$ 1,885
Disposal Group, Not Discontinued Operations [Member] | MtronPTI [Member]
Net sales										0	23,529
Total revenues										0	23,529
Manufacturing cost of sales										0	15,164
Engineering, selling and administrative										28	5,870
Total expenses										28	21,034
Operating (loss) income										(28)	2,495
Interest expense, net										0	(6)
Other expense, net										0	(44)
(Loss) income from discontinued operations before income taxes										(28)	2,445
Income tax provision										0	560
(Loss) income from discontinued operations, net of tax										$ (28)	$ 1,885
Depreciation									$ 496
Amortization of finite-lived intangible assets									42
Stock-based compensation expense									26
Capital expenditures									$ (662)

Note 4 - Segment Information -

Note 4 - Segment Information - Schedule of Segment Reporting Information (Details) - USD ($) $ in Thousands	3 Months Ended																12 Months Ended
	Dec. 31, 2023		Sep. 30, 2023		Jun. 30, 2023		Mar. 31, 2023		Dec. 31, 2022		Sep. 30, 2022		Jun. 30, 2022		Mar. 31, 2022		Dec. 31, 2023	Dec. 31, 2022
Revenues:
Net sales	$ 446		$ 438		$ 403		$ 441		$ 524		$ 344		$ 370		$ 417		$ 1,728	$ 1,655
Net investment income	549		544		275		198		352		54		10		(3)		1,566	413
Net gains (losses)	0	[1]	(4)	[1]	43	[1]	345	[1]	(298)	[1]	(2,121)	[1]	(2,373)	[1]	45	[1]	384	(4,747)
Total revenues	995		978		721		984		578		(1,723)		(1,993)		459		3,678	(2,679)
Expenses:
Manufacturing cost of sales	201		195		208		192		165		203		227		242		796	837
Engineering, selling and administrative	465		584		645		542		576		669		623		1,022		2,236	2,890
Total expenses	666		779		853		734		741		872		850		1,264		3,032	3,727
Income (loss) from continuing operations before income taxes																	646	(6,406)
Income tax expense (benefit)	169		69		(2)		65		(164)		(611)		(588)		(166)		301	(1,529)
Income (loss) from continuing operations	160		130		(130)		185		1	[2]	(1,984)	[2]	(2,255)	[2]	(639)	[2]	345	(4,877)
(Loss) income from discontinued operations, net of tax	0		0		0		(28)		132		488		457		808		(28)	1,885
Net loss attributable to LGL Group or non-controlling interests	160		130		(130)		157		133		(1,496)		(1,798)		169		317	(2,992)
Less: Net income attributable to non-controlling interests	26		22		0		0		0		0		0		0		48	0
Net income (loss) attributable to LGL Group common stockholders	$ 134		$ 108		$ (130)		$ 157		$ 133		$ (1,496)		$ (1,798)		$ 169		269	(2,992)
Operating Segments [Member] | Electronic Instruments [Member]
Revenues:
Net sales																	1,728	1,655
Net investment income																	0	0
Net gains (losses)																	0	0
Total revenues																	1,728	1,655
Expenses:
Manufacturing cost of sales																	796	837
Engineering, selling and administrative																	780	715
Total expenses																	1,576	1,552
Income (loss) from continuing operations before income taxes																	152	103
Income tax expense (benefit)																	0	0
Income (loss) from continuing operations																	152	103
(Loss) income from discontinued operations, net of tax																	0	0
Net loss attributable to LGL Group or non-controlling interests																	152	103
Less: Net income attributable to non-controlling interests																	0	0
Net income (loss) attributable to LGL Group common stockholders																	152	103
Operating Segments [Member] | Merchant Investment [Member]
Revenues:
Net sales																	0	0
Net investment income																	869	0
Net gains (losses)																	0	0
Total revenues																	869	0
Expenses:
Manufacturing cost of sales																	0	0
Engineering, selling and administrative																	216	0
Total expenses																	216	0
Income (loss) from continuing operations before income taxes																	653	0
Income tax expense (benefit)																	0	0
Income (loss) from continuing operations																	653	0
(Loss) income from discontinued operations, net of tax																	0	0
Net loss attributable to LGL Group or non-controlling interests																	653	0
Less: Net income attributable to non-controlling interests																	48	0
Net income (loss) attributable to LGL Group common stockholders																	605	0
Corporate, Non-Segment [Member]
Revenues:
Net sales																	0	0
Net investment income																	697	413
Net gains (losses)																	384	(4,747)
Total revenues																	1,081	(4,334)
Expenses:
Manufacturing cost of sales																	0	0
Engineering, selling and administrative																	1,240	2,175
Total expenses																	1,240	2,175
Income (loss) from continuing operations before income taxes																	(159)	(6,509)
Income tax expense (benefit)																	301	(1,529)
Income (loss) from continuing operations																	(460)	(4,980)
(Loss) income from discontinued operations, net of tax																	(28)	1,885
Net loss attributable to LGL Group or non-controlling interests																	(488)	(3,095)
Less: Net income attributable to non-controlling interests																	0	0
Net income (loss) attributable to LGL Group common stockholders																	$ (488)	$ (3,095)
[1]During Q1 and Q2 2023, the net gains primarily relate to the sale of our investments in mutual funds managed by GAMCO Investors, Inc.[2]Basic and diluted earnings per share are calculated using actual, unrounded amounts. Therefore, (i) the components of earnings per share may not sum to its corresponding total or (ii) the quarterly earnings per share may not sum to the earnings per share on the Consolidated Statements of Operations.

Note 4 - Segment Information _2

Note 4 - Segment Information - Assets and Capital Expenditures (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Assets	$ 41,850	$ 39,785
Capital expenditures	0	0
Operating Segments [Member] | Electronic Instruments [Member]
Assets	843	1,118
Capital expenditures	0	0
Operating Segments [Member] | Merchant Investment [Member]
Assets	23,530	0
Capital expenditures	0	0
Corporate, Non-Segment [Member]
Assets	17,477	38,667
Capital expenditures	$ 0	$ 0

Note 5 - Investments (Details T

Note 5 - Investments (Details Textual) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) shares	Dec. 31, 2022 USD ($)
Investment Owned, Fair Value	$ 22	$ 16,585
Proceeds from Sale and Maturity of Marketable Securities	16,947	2,058
Marketable Security, Realized Gain (Loss)	$ (4,316)	$ (22,868)
Iron Net [Member] | Discontinued Operations, Disposed of by Sale [Member]
Investment Owned, Balance, Shares (in shares) | shares	198,250
GAMCO Investors, Inc. [Member] | Discontinued Operations, Disposed of by Sale [Member]
Proceeds from Sale and Maturity of Marketable Securities	$ 16,886
Marketable Security, Realized Gain (Loss)	$ 370
GAMCO Investors, Inc. [Member]
Number of Mutual Fund Investments	0	2
Iron Net [Member]
Investment Owned, Cost	$ 46
Investment Owned, Fair Value	$ 4,273

Note 5 - Investments - Details

Note 5 - Investments - Details of Marketable Securities (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022
Investment Owned, Fair Value		$ 22	$ 16,585
Basis		34	21,297
Cumulative unrealized (loss) gain		(12)	(4,712)
Equity Securities [Member]
Investment Owned, Fair Value	[1]	22	69
Basis	[1]	34	4,307
Cumulative unrealized (loss) gain	[1]	(12)	(4,238)
Mutual Fund [Member]
Investment Owned, Fair Value	[2]	0	16,516
Basis	[2]	0	16,990
Cumulative unrealized (loss) gain	[2]	$ 0	$ (474)
[1]As of December 31, 2022, included the Company's investment in IronNet, Inc., which had a fair value of $46 and a cost basis of $4,273.[2]As of December 31, 2023, the Company did not have any investments in mutual funds managed by GAMCO Investors, Inc. included in Marketable securities. As of December 31, 2022, the Company had investments in 2 mutual funds managed by GAMCO Investors, Inc. included in Marketable securities.

Note 5 - Investments - Net Inve

Note 5 - Investments - Net Investment Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Interest on cash and cash equivalents	$ 1,566	$ 194
Dividends on marketable securities	0	219
Net investment income	$ 1,566	$ 413

Note 5 - Investments - Net Gain

Note 5 - Investments - Net Gain (Losses) (Details) - USD ($) $ in Thousands

3 Months Ended

12 Months Ended

Dec. 31, 2023

[2]

Sep. 30, 2023

[2]

Jun. 30, 2023

[2]

Mar. 31, 2023

[2]

Dec. 31, 2022

[2]

Sep. 30, 2022

[2]

Jun. 30, 2022

[2]

Mar. 31, 2022

[2]

Dec. 31, 2023

Dec. 31, 2022

Marketable securities (a)

[1]

$ 384

$ (4,747)

Net gains (losses)

$ 0

$ (4)

$ 43

$ 345

$ (298)

$ (2,121)

$ (2,373)

$ 45

$ 384

$ (4,747)

[1]During 2023, the Company sold its investments in mutual funds managed by GAMCO Investors, Inc. as well as 198,250 shares of IronNet, Inc.[2]During Q1 and Q2 2023, the net gains primarily relate to the sale of our investments in mutual funds managed by GAMCO Investors, Inc.

Note 6 - Fair Value Measureme_3

Note 6 - Fair Value Measurements (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Asset Impairment Charges	$ 0	$ 0
Fair Value, Recurring [Member]
Liabilities, Fair Value Disclosure	$ 0	$ 0

Note 6 - Fair Value Measureme_4

Note 6 - Fair Value Measurements - Assets Measured at Fair Value on Recurring Basis (Details) - Fair Value, Recurring [Member] - USD ($) $ in Thousands		Dec. 31, 2023	Dec. 31, 2022
Assets, Fair Value Disclosure		$ 40,251	$ 34,307
Cash and Cash Equivalents [Member]
Assets, Fair Value Disclosure	[1]	40,229	17,722
Equity Securities [Member]
Assets, Fair Value Disclosure		22	69
Mutual Fund [Member]
Assets, Fair Value Disclosure		0	16,516
Marketable Securities [Member]
Assets, Fair Value Disclosure		22	16,585
Fair Value, Inputs, Level 1 [Member]
Assets, Fair Value Disclosure		40,251	17,791
Fair Value, Inputs, Level 1 [Member] | Cash and Cash Equivalents [Member]
Assets, Fair Value Disclosure	[1]	40,229	17,722
Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member]
Assets, Fair Value Disclosure		22	69
Fair Value, Inputs, Level 1 [Member] | Mutual Fund [Member]
Assets, Fair Value Disclosure		0	0
Fair Value, Inputs, Level 1 [Member] | Marketable Securities [Member]
Assets, Fair Value Disclosure		22	69
Fair Value, Inputs, Level 2 [Member]
Assets, Fair Value Disclosure		0	16,516
Fair Value, Inputs, Level 2 [Member] | Cash and Cash Equivalents [Member]
Assets, Fair Value Disclosure	[1]	0	0
Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member]
Assets, Fair Value Disclosure		0	0
Fair Value, Inputs, Level 2 [Member] | Mutual Fund [Member]
Assets, Fair Value Disclosure		0	16,516
Fair Value, Inputs, Level 2 [Member] | Marketable Securities [Member]
Assets, Fair Value Disclosure		0	16,516
Fair Value, Inputs, Level 3 [Member]
Assets, Fair Value Disclosure		0	0
Fair Value, Inputs, Level 3 [Member] | Cash and Cash Equivalents [Member]
Assets, Fair Value Disclosure	[1]	0	0
Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member]
Assets, Fair Value Disclosure		0	0
Fair Value, Inputs, Level 3 [Member] | Mutual Fund [Member]
Assets, Fair Value Disclosure		0	0
Fair Value, Inputs, Level 3 [Member] | Marketable Securities [Member]
Assets, Fair Value Disclosure		$ 0	$ 0
[1]As of December 31, 2023 and 2022, included investments in money market mutual funds managed by GAMCO Investors, Inc.

Note 7 - Variable Interest En_3

Note 7 - Variable Interest Entities (Details Textual) - USD ($) $ in Thousands	1 Months Ended
	Jun. 30, 2023	Dec. 31, 2023	Dec. 31, 2022
Equity, Attributable to Noncontrolling Interest		$ 1,920	$ 0
LGL System [Member]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners		99%
LGL System [Member]
Equity, Attributable to Noncontrolling Interest		$ 1,920
Lynch Capital [Member] | LGL Nevada [Member]
Payments to Acquire Interest in Subsidiaries and Affiliates	$ 4
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage	1%
Lynch Capital [Member] | LGL System [Member]
Payments to Acquire Interest in Subsidiaries and Affiliates	$ 1,000
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage	34.80%

Note 7 - Variable Interest En_4

Note 7 - Variable Interest Entities - VIEs (Details) - USD ($) $ in Thousands		Dec. 31, 2023	Dec. 31, 2022
Cash and cash equivalents		$ 40,711	$ 21,507
Accounts receivable, net of allowance of $58 and $86, respectively		356	543
Total current assets		41,566	39,340
Total assets		41,850	39,785
Total liabilities		1,168	1,295
Variable Interest Entity, Not Primary Beneficiary [Member]
Total assets		588	0
On-balance sheet (a)	[1]	3	0
Off-balance sheet (b)	[2]	0	0
Total		3	$ 0
Variable Interest Entity, Primary Beneficiary [Member]
Cash and cash equivalents		2,932
Accounts receivable, net of allowance of $58 and $86, respectively		14
Total current assets		2,946
Total assets		2,946
Total liabilities		$ 0
[1]As of December 31, 2023, our investment in LGL Nevada was recorded in Other assets on the Consolidated Balance Sheets[2]This amount represents our remaining unfunded commitments to LGL Nevada.

Note 8 - Related Party Transa_2

Note 8 - Related Party Transactions (Details Textual) - USD ($) $ in Thousands	3 Months Ended																12 Months Ended
	Dec. 31, 2023		Sep. 30, 2023	[1]	Jun. 30, 2023	[1]	Mar. 31, 2023	[1]	Dec. 31, 2022		Sep. 30, 2022	[1]	Jun. 30, 2022	[1]	Mar. 31, 2022	[1]	Dec. 31, 2023	Dec. 31, 2022
Investment Income, Net																	$ 1,566	$ 413
Gain (Loss) on Investments	$ 0	[1]	$ (4)		$ 43		$ 345		$ (298)	[1]	$ (2,121)		$ (2,373)		$ 45		384	(4,747)
Income Taxes Paid																	$ 207	$ 741
GAMCO Investors, Inc. [Member]
Investment Expense Rate																	0.17%	0.52%
Funds Invested in Mutual Funds	32,568								26,811								$ 32,568	$ 26,811
Income From Mutual Funds																	1,677
Investment Income, Net																	1,307
Gain (Loss) on Investments																	370
GAMCO Investors, Inc. [Member] | Cash and Cash Equivalents [Member]
Funds Invested in Mutual Funds									10,295									10,295
GAMCO Investors, Inc. [Member] | Marketable Securities [Member]
Funds Invested in Mutual Funds									$ 16,516									16,516
MtronPTI [Member]
Excess Separation Costs																	28	219
MtronPTI [Member] | Transitional Administrative and Management Services Agreement [Member]
Monthly Payment	$ 4																4
MtronPTI [Member] | Tax Indemnity and Sharing Agreement [Member]
Income Taxes Paid																	$ 0	$ 0
[1]During Q1 and Q2 2023, the net gains primarily relate to the sale of our investments in mutual funds managed by GAMCO Investors, Inc.

Note 9 - Income Taxes (Details

Note 9 - Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Deferred Tax Assets, Valuation Allowance	$ 0	$ 0
Unrecognized Tax Benefits	678	$ 637	$ 458
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 678
Domestic Tax Authority [Member]
Open Tax Year	2019 2020 2021
State and Local Jurisdiction [Member]
Open Tax Year	2019 2020 2021
Foreign Tax Authority [Member]
Open Tax Year	2017 2018 2019 2020 2021 2022 2023

Note 9 - Income Taxes - Compone

Note 9 - Income Taxes - Components of Income Tax Expense (Benefits) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Federal									$ 42	$ (147)
State and local									177	209
Total current tax expense									219	62
Federal									83	(1,411)
State and local									(1)	(180)
Total before change in valuation allowance									82	(1,591)
Change in valuation allowance									0	0
Net deferred tax expense (benefit)									82	(1,591)
Income tax provision (benefit)	$ 169	$ 69	$ (2)	$ 65	$ (164)	$ (611)	$ (588)	$ (166)	$ 301	$ (1,529)

Note 9 - Income Taxes - Income

Note 9 - Income Taxes - Income Tax Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Income (loss) before income taxes									$ 646	$ (6,406)
Tax rate									21%	21%
Income tax expense (benefit) at federal statutory rate									$ 136	$ (1,344)
State taxes, net of federal benefit									57	(114)
Permanent differences									0	43
Noncontrolling interests									(10)	0
Change in rate									(18)	(17)
Change in uncertain tax positions									41	29
Other									95	(126)
Income tax provision (benefit)	$ 169	$ 69	$ (2)	$ 65	$ (164)	$ (611)	$ (588)	$ (166)	$ 301	$ (1,529)
Effective tax rate									46.50%	23.90%

Note 9 - Income Taxes - Schedul

Note 9 - Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Inventory reserve	$ 19	$ 12
Allowance for doubtful accounts	15	20
Lease liability	19	31
Unrealized gains on marketable securities	3	166
Stock-based compensation	1	8
Depreciation and amortization	13	11
Federal tax loss carryforwards	77	0
Other reserves and accruals	24	17
Total deferred tax assets	171	265
Right-of-use asset	19	31
Total deferred tax liabilities	19	31
Net deferred tax assets before valuation allowance	152	234
Valuation allowance	0	0
Net deferred tax assets (liabilities)	$ 152	$ 234

Note 9 - Income Taxes - Unrecog

Note 9 - Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Balance, beginning of year	$ 637	$ 458
Additions for tax positions of prior years	(31)
Additions for tax positions of prior years		37
Additions based on tax positions related to the current year	72	142
Balance, end of year	$ 678	$ 637

Note 10 - Stock-Based Compens_3

Note 10 - Stock-Based Compensation (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Oct. 07, 2022	Dec. 28, 2021
Mtron Industries Inc [Member] | L G L Shares [Member]
Cancelation of Shares Due to Separation (in shares)			52,533
Share-Based Payment Arrangement, Option [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Purchase Price of Common Stock, Percent	10%
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)	5 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)	3 years
Restricted Stock [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 102
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)	3 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	$ 34	$ 313
Incentive Plan 2011 [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)				1,000,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)	955,070

Note 10 - Stock-based Compens_4

Note 10 - Stock-based Compensation - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Stock-based compensation expense	$ 3	$ 388
Restricted Stock [Member]
Stock-based compensation expense	3	362
Share-Based Payment Arrangement, Option [Member]
Stock-based compensation expense	$ 0	$ 26

Note 10 - Stock-Based Compens_5

Note 10 - Stock-Based Compensation - Restricted Stock Awards (Details) - Restricted Stock [Member] - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Balance, number of shares (in shares)	3,750
Balance, weighted average grant date fair value (in dollars per share)	$ 9.01
Balance, aggregate grant date fair value	$ 105	$ 34
Granted, number of shares (in shares)	20,118
Granted, weighted average grant date fair value (in dollars per share)	$ 5.22
Granted, aggregate grant date fair value	$ 105
Vested, number of shares (in shares)	(3,750)
Vested, weighted average grant date fair value (in dollars per share)	$ 9.01
Vested, aggregate grant date fair value	$ (34)
Canceled, number of shares (in shares)	0
Canceled, weighted average grant date fair value (in dollars per share)	$ 0
Canceled, aggregate grant date fair value	$ 0
Balance, number of shares (in shares)	20,118
Balance, weighted average grant date fair value (in dollars per share)	$ 5.22

Note 11 - Stockholders' Equity

Note 11 - Stockholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Thousands			12 Months Ended
	Oct. 18, 2022	Oct. 17, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 28, 2021	Dec. 27, 2021	Nov. 16, 2020	Aug. 29, 2011
Common Stock, Shares Authorized (in shares)			30,000,000	30,000,000	30,000,000	10,000,000
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased (in shares)								540,000
Treasury Stock, Shares, Acquired (in shares)			0	0
Treasury Stock, Common, Shares (in shares)			81,584	81,584
Treasury Stock, Common, Value			$ 580	$ 580
European Style Warrants [Member]
Class of Warrant or Right, Outstanding (in shares)							5,258,320
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 4.75	$ 12.5
Warrants, Target Trigger Price for Potential Acceleration of Exercise Date (in dollars per share)	$ 6.65	$ 17.5
Proceeds from Warrant Exercises	$ 4,995

Note 12 - Earnings Per Common_3

Note 12 - Earnings Per Common Share (Details Textual) - shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Warrant [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	1,051,664	1,051,664
Restricted Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	20,118

Note 12 - Earnings Per Common_4

Note 12 - Earnings Per Common Share - Reconciliation of Basic to Diluted Weighted Average Shares Outstanding (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended																12 Months Ended
	Dec. 31, 2023		Sep. 30, 2023		Jun. 30, 2023		Mar. 31, 2023		Dec. 31, 2022		Sep. 30, 2022		Jun. 30, 2022		Mar. 31, 2022		Dec. 31, 2023	Dec. 31, 2022
Income (loss) from continuing operations	$ 160		$ 130		$ (130)		$ 185		$ 1	[1]	$ (1,984)	[1]	$ (2,255)	[1]	$ (639)	[1]	$ 345	$ (4,877)
Less: Net income from continuing operations attributable to non-controlling interests																	48	0
Income (loss) attributable to LGL Group common stockholders from continuing operations																	297	(4,877)
(Loss) income from discontinued operations, net of tax																	(28)	1,885
Net income (loss) attributable to LGL Group common stockholders																	$ 269	$ (2,992)
Weighted average common shares outstanding - basic (in shares)	5,352,937		5,352,937		5,352,937		5,352,937		5,349,187		5,346,043		5,334,187		5,323,973		5,352,937	5,338,417
Stock options (in shares)																	0	45,249
Weighted average common shares outstanding - diluted (in shares)	5,381,685		5,355,006		5,352,937		5,352,937		5,356,188		5,346,043		5,334,187		5,345,202		5,352,937	5,383,666
Income (loss) from continuing operations (in dollars per share)	$ 0.03	[1]	$ 0.02	[1]	$ (0.02)	[1]	$ 0.03	[1]	$ 0	[1]	$ (0.37)	[1]	$ (0.42)	[1]	$ (0.12)	[1]	$ 0.06	$ (0.91)
(Loss) income from discontinued operations (in dollars per share)	0	[1]	0	[1]	0	[1]	(0.01)	[1]	0.02	[1]	0.09	[1]	0.09	[1]	0.15	[1]	(0.01)	0.35
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	0.03	[1]	0.02	[1]	(0.02)	[1]	0.03	[1]	0.02	[1]	(0.28)	[1]	(0.34)	[1]	0.03	[1]	0.05	(0.56)
Income (loss) from continuing operations (in dollars per share)	0.02	[1]	0.02	[1]	(0.02)	[1]	0.03	[1]	0	[1]	(0.37)	[1]	(0.42)	[1]	(0.12)	[1]	0.06	(0.91)
(Loss) income from discontinued operations (in dollars per share)	0	[1]	0	[1]	0	[1]	(0.01)	[1]	0.02	[1]	0.09	[1]	0.09	[1]	0.15	[1]	(0.01)	0.35
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	$ 0.02	[1]	$ 0.02	[1]	$ (0.02)	[1]	$ 0.03	[1]	$ 0.02	[1]	$ (0.28)	[1]	$ (0.34)	[1]	$ 0.03	[1]	$ 0.05	$ (0.56)
[1]Basic and diluted earnings per share are calculated using actual, unrounded amounts. Therefore, (i) the components of earnings per share may not sum to its corresponding total or (ii) the quarterly earnings per share may not sum to the earnings per share on the Consolidated Statements of Operations.

Note 13 - Leases (Details Textu

Note 13 - Leases (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Operating Lease, Cost	$ 74	$ 69
Operating Lease, Liability	75	132
Operating Lease, Liability, Current	$ 61	$ 62
Operating Lease, Weighted Average Discount Rate, Percent	7.60%	6.30%
Operating Lease, Weighted Average Remaining Lease Term (Year)	1 year	2 years
Minimum [Member]
Lessee, Operating Lease, Term of Contract (Year)	1 year
Maximum [Member]
Lessee, Operating Lease, Term of Contract (Year)	5 years

Note 13 - Leases - Future Minim

Note 13 - Leases - Future Minimum Lease Payment Obligations (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
2024	$ 64
2025	15
Total lease payments	79
Less: interest	(4)
Net lease payments	$ 75	$ 132

Note 15 - Other Financial Sta_3

Note 15 - Other Financial Statement Information - Schedule of Components of Inventory (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Raw materials	$ 271	$ 307
Work in process	9	7
Total gross inventory	280	314
Reserve for excess and obsolete inventory	(76)	(49)
Inventories, net	$ 204	$ 265

Note 15 - Other Financial Sta_4

Note 15 - Other Financial Statement Information - Property, Plant and Equipment, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Machinery and equipment	$ 639	$ 639
Gross property, plant and equipment	639	639
Less: Accumulated depreciation	(639)	(638)
Property, plant and equipment, net	$ 0	$ 1

Note 15 - Other Financial Sta_5

Note 15 - Other Financial Statement Information - Intangible Assets, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Gross intangible assets	$ 214	$ 214
Less: Accumulated amortization	(157)	(136)
Total	57	78
Intellectual Property [Member]
Gross intangible assets	$ 214	$ 214

Note 16 - Domestic and Foreig_3

Note 16 - Domestic and Foreign Revenues - Schedule of Revenues (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Net sales	$ 446	$ 438	$ 403	$ 441	$ 524	$ 344	$ 370	$ 417	$ 1,728	$ 1,655
SPAIN
Net sales									330	65
CANADA
Net sales									137	54
FRANCE
Net sales									33	142
ROMANIA
Net sales									0	100
All Other Foreign Countries [Member]
Net sales									175	99
Non-US [Member]
Net sales									675	460
UNITED STATES
Net sales									$ 1,053	$ 1,195

Note 17 - Quarterly Financial_3

Note 17 - Quarterly Financial Data (Unaudited) - Schedule of Quarterly Financial Data (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended																12 Months Ended
	Dec. 31, 2023		Sep. 30, 2023		Jun. 30, 2023		Mar. 31, 2023		Dec. 31, 2022		Sep. 30, 2022		Jun. 30, 2022		Mar. 31, 2022		Dec. 31, 2023	Dec. 31, 2022
Net sales	$ 446		$ 438		$ 403		$ 441		$ 524		$ 344		$ 370		$ 417		$ 1,728	$ 1,655
Net investment income	549		544		275		198		352		54		10		(3)		1,566	413
Net gains (losses) (a)	0	[1]	(4)	[1]	43	[1]	345	[1]	(298)	[1]	(2,121)	[1]	(2,373)	[1]	45	[1]	384	(4,747)
Total revenues	995		978		721		984		578		(1,723)		(1,993)		459		3,678	(2,679)
Manufacturing cost of sales	201		195		208		192		165		203		227		242		796	837
Engineering, selling and administrative	465		584		645		542		576		669		623		1,022		2,236	2,890
Total expenses	666		779		853		734		741		872		850		1,264		3,032	3,727
Income (loss) from continuing operations before income taxes	329		199		(132)		250		(163)		(2,595)		(2,843)		(805)
Income tax expense (benefit)	169		69		(2)		65		(164)		(611)		(588)		(166)		301	(1,529)
Net income (loss) from continuing operations	160		130		(130)		185		1	[2]	(1,984)	[2]	(2,255)	[2]	(639)	[2]	345	(4,877)
Loss from discontinued operations, net of tax	0		0		0		(28)		132		488		457		808		(28)	1,885
Net income (loss)	160		130		(130)		157		133		(1,496)		(1,798)		169		317	(2,992)
Less: Net income attributable to non-controlling interests	26		22		0		0		0		0		0		0		48	0
Net income (loss) attributable to LGL Group common stockholders	$ 134		$ 108		$ (130)		$ 157		$ 133		$ (1,496)		$ (1,798)		$ 169		$ 269	$ (2,992)
Income (loss) from continuing operations (in dollars per share)	$ 0.03	[2]	$ 0.02	[2]	$ (0.02)	[2]	$ 0.03	[2]	$ 0	[2]	$ (0.37)	[2]	$ (0.42)	[2]	$ (0.12)	[2]	$ 0.06	$ (0.91)
(Loss) income from discontinued operations (in dollars per share)	0	[2]	0	[2]	0	[2]	(0.01)	[2]	0.02	[2]	0.09	[2]	0.09	[2]	0.15	[2]	(0.01)	0.35
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	0.03	[2]	0.02	[2]	(0.02)	[2]	0.03	[2]	0.02	[2]	(0.28)	[2]	(0.34)	[2]	0.03	[2]	0.05	(0.56)
Income (loss) from continuing operations (in dollars per share)	0.02	[2]	0.02	[2]	(0.02)	[2]	0.03	[2]	0	[2]	(0.37)	[2]	(0.42)	[2]	(0.12)	[2]	0.06	(0.91)
(Loss) income from discontinued operations (in dollars per share)	0	[2]	0	[2]	0	[2]	(0.01)	[2]	0.02	[2]	0.09	[2]	0.09	[2]	0.15	[2]	(0.01)	0.35
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	$ 0.02	[2]	$ 0.02	[2]	$ (0.02)	[2]	$ 0.03	[2]	$ 0.02	[2]	$ (0.28)	[2]	$ (0.34)	[2]	$ 0.03	[2]	$ 0.05	$ (0.56)
Weighted average common shares outstanding - basic (in shares)	5,352,937		5,352,937		5,352,937		5,352,937		5,349,187		5,346,043		5,334,187		5,323,973		5,352,937	5,338,417
Diluted (in shares)	5,381,685		5,355,006		5,352,937		5,352,937		5,356,188		5,346,043		5,334,187		5,345,202		5,352,937	5,383,666
[1]During Q1 and Q2 2023, the net gains primarily relate to the sale of our investments in mutual funds managed by GAMCO Investors, Inc.[2]Basic and diluted earnings per share are calculated using actual, unrounded amounts. Therefore, (i) the components of earnings per share may not sum to its corresponding total or (ii) the quarterly earnings per share may not sum to the earnings per share on the Consolidated Statements of Operations.