Description of Business, Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Details)		3 Months Ended								12 Months Ended
	Oct. 07, 2022 shares	Dec. 31, 2022 USD ($) shares	Sep. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($) shares	Sep. 30, 2021 USD ($)	Jun. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2022 USD ($) Segment shares	Dec. 31, 2021 USD ($) shares
Summary Of Significant Accounting Policies [Line Items]
Number of Subsidiaries | Segment										2
Conversion of stock description										one-half share of the Company's common stock for every share of LGL Group's common stock
Depreciation expense										$ 671,000	$ 488,000
Intangible assets carrying value		$ 58,000				$ 112,000				$ 58,000	112,000
Estimated useful life of intangible assets										10 years
Goodwill		40,000				40,000				$ 40,000	40,000
Term of warranty										1 year
Accrued warranty reserve		$ 95,000				$ 80,000				$ 95,000	80,000
Research and development costs charged to operations										$ 2,006,000	$ 2,006,000
Common stock, shares outstanding (in shares) | shares	2,670,000	2,726,798				0				2,726,798	0
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross | shares	9,710
Total revenues		$ 8,673,000	$ 8,417,000	$ 7,064,000	$ 7,691,000	$ 6,860,000	$ 7,173,000	$ 6,407,000	$ 6,254,000	$ 31,845,000	$ 26,694,000
Accounts receivable		$ 2,872,000				$ 2,568,000				2,872,000	2,568,000
Re-measurement loss										(82,000)	(11,000)
Revenues | Customer Concentration Risk | Commercial Aerospace and Defense Company
Summary Of Significant Accounting Policies [Line Items]
Total revenues										$ 8,190,000	$ 7,838,000
Concentration risk, percentage										25.70%	29.40%
Revenues | Customer Concentration Risk | Defense Contractor
Summary Of Significant Accounting Policies [Line Items]
Total revenues										$ 4,857,000	$ 3,138,000
Concentration risk, percentage										15.30%	11.80%
Accounts Receivable | Customer Concentration Risk | Four Largest Customer
Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage										53.80%	62.30%
ASU 2014-09
Summary Of Significant Accounting Policies [Line Items]
Revenue, performance obligation, description of timing										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 days, with a few exceptions, none regularly exceeding 60 days.
Minimum | ASU 2014-09
Summary Of Significant Accounting Policies [Line Items]
Customer due days										30 days
Minimum | Buildings and Improvements
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life										5 years
Minimum | Other Fixed Assets
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life										3 years
Maximum | ASU 2014-09
Summary Of Significant Accounting Policies [Line Items]
Customer due days										60 days
Maximum | Buildings and Improvements
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life										35 years
Maximum | Other Fixed Assets
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life										10 years
LGL Group, Inc.
Summary Of Significant Accounting Policies [Line Items]
Percentage of distribution of common shares to former parents stockholders	100.00%
Distribution made to former stockholders date of record	Sep. 30, 2022
Ownership interest	0.00%
Conversion of stock description										one-half share of the Company's common stock for every share of LGL Group's common stock held by them.