Merger Agreement with Mobile X Global, Inc. (Details) $ / shares in Units, $ in Millions	6 Months Ended
Jun. 30, 2022 USD ($) $ / shares shares
Third-party institutional investor [Member]
Merger Agreement with Mobile X Global, Inc.
Number of shares held by shareholder after reverse stock split	1,066,860
Third-party institutional investor and certain other investors [Member]
Merger Agreement with Mobile X Global, Inc.
Percentage of stockholding by stockholders after the Merger	13.00%
Other Investors [Member]
Merger Agreement with Mobile X Global, Inc.
Number of shares held by shareholder after reverse stock split	75,851
Electro-Sensors, Inc. [Member]
Merger Agreement with Mobile X Global, Inc.
Reverse stock split	four-for-onefour-for-one
Percentage of stockholding by stockholders after the Merger	11.00%
Number of share options outstanding	325,000
Number of shares held by shareholder after reverse stock split	932,005
Aggregate cash dividends before the closing of the Merger \| $	$ 18.0
Cash dividends per share before reverse stock split \| $ / shares	$ 4.83
Electro-Sensors, Inc. [Member] \| Third-party institutional investor [Member]
Merger Agreement with Mobile X Global, Inc.
Equity financing \| $	$ 20.0
Mobile X Global, Inc. Combined Company [Member] \| Third-party institutional investor [Member]
Merger Agreement with Mobile X Global, Inc.
Equity line of credit \| $	$ 50.0
Mobile X Global, Inc. Original Company [Member]
Merger Agreement with Mobile X Global, Inc.
Percentage of stockholding by stockholders after the Merger	76.00%
Number of shares held by shareholder after reverse stock split	6,668,294

The amount of equity financing.

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The amount of equity line of credit.

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The number of shares held by shareholder after reverse stock split.

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The percentage of stockholding by stockholders after the Merger.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of paid and unpaid cash dividends declared for classes of stock, for example, but not limited to, common and preferred.

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Number of options outstanding, including both vested and non-vested options.

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Description of the reverse stock split arrangement. Also provide the retroactive effect given by the reverse split that occurs after the balance sheet date but before the release of financial statements.

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