Summary of Significant Accounting Polices - Additional Information (Details)	3 Months Ended								12 Months Ended
	Dec. 31, 2022 USD ($)	Sep. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Sep. 30, 2021 USD ($)	Jun. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2022 USD ($) Customer Segment shares	Dec. 31, 2021 USD ($) Customer shares
Summary Of Significant Accounting Policies [Line Items]
Intangible assets carrying value	$ 78,000				$ 100,000				$ 78,000	$ 100,000
Term of warranty									1 year
Warrants to purchase, common stock | shares									1,051,664	1,051,664
Percentage of Ultimate Settlement									50.00%
Revenue concentration greater than 10%	524,000	$ 344,000	$ 370,000	$ 417,000	361,000	$ 328,000	$ 475,000	$ 282,000	$ 1,655,000	$ 1,446,000
Number of identified reportable segments | Segment									1
Revenues [Member] | Customer Concentration Risk [Member] | Largest Customer [Member]
Summary Of Significant Accounting Policies [Line Items]
Revenue concentration greater than 10%									$ 312,000	$ 540,000
Concentration risk, percentage									18.90%	37.30%
Revenues [Member] | Customer Concentration Risk [Member] | Second Largest Customer [Member]
Summary Of Significant Accounting Policies [Line Items]
Revenue concentration greater than 10%									$ 195,000	$ 131,000
Concentration risk, percentage									11.80%	9.10%
Accounts Receivable [Member] | Customer Concentration Risk [Member]
Summary Of Significant Accounting Policies [Line Items]
Number of large customers | Customer									2	2
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Largest Customer [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage									62.60%	53.70%
Accounts receivable	$ 394,000				$ 402,000				$ 394,000	$ 402,000
Options [Member]
Summary Of Significant Accounting Policies [Line Items]
Securities excluded from the diluted earnings per share computation (in shares) | shares									25,000	25,000
ASU 2014-09 [Member]
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.
ASU 2016-13 [Member]
Summary Of Significant Accounting Policies [Line Items]
Change in accounting principle, accounting standards update, adopted	true								true
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Percentage of sponsorship owned									10.00%	10.00%
Minimum [Member] | ASU 2014-09 [Member]
Summary Of Significant Accounting Policies [Line Items]
Customer due days									30 days
Minimum [Member] | Other Fixed Assets [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life									3 years
Minimum [Member] | LGL Systems Acquisition Holdings Company, LLC [Member]
Summary Of Significant Accounting Policies [Line Items]
Equity method investment ownership percentage	20.00%								20.00%
Percentage of sponsorship owned									10.00%
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life of intangible assets									10 years
Maximum [Member] | ASU 2014-09 [Member]
Summary Of Significant Accounting Policies [Line Items]
Customer due days									60 days
Maximum [Member] | Other Fixed Assets [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life									10 years
Maximum [Member] | LGL Systems Acquisition Holdings Company, LLC [Member]
Summary Of Significant Accounting Policies [Line Items]
Equity method investment ownership percentage	50.00%								50.00%