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Number of shares issued for warrants exercised.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Aggregate number of common shares reserved for future issuance.

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The maximum number of shares authorized for issuance under the deferred compensation arrangement as of the balance sheet date.

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Amount of cost capitalized for award under share-based payment arrangement.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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The cash inflow from the additional capital contribution to the entity.

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The cash inflow associated with the amount received from holders exercising their stock warrants.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Number of shares authorized for issuance under share-based payment arrangement.

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Price of a single share of a number of saleable stocks of a company.

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Percentage of vesting of award under share-based payment arrangement.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Per share or per unit amount of equity securities issued.

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Number of new stock issued during the period.

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Note 6 - Stockholders' Equity (Details Textual) - USD ($)			3 Months Ended		6 Months Ended
	Jan. 12, 2024	Dec. 10, 2023	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023	Jun. 28, 2023	Dec. 31, 2022
Stock Issued During Period Shares, Warrants Exercised (in shares)					103,500
Class of Warrant or Right, Exercised During Period, Exercise Price (in dollars per share)					$ 0.5
Proceeds from Warrant Exercises					$ 51,751
Deferred Compensation Arrangement with Individual, Shares Authorized for Issuance (in shares)			3,184,683	2,762,765	3,184,683	2,762,765	3,098,917		2,440,673
Share-Based Payment Arrangement, Option [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount			$ 1,200,000		$ 1,200,000
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)					1 year 9 months 18 days
Share-Based Payment Arrangement, Option [Member] \| Share-Based Payment Arrangement, Nonemployee [Member]
Share-Based Payment Arrangement, Expense			1,100	$ 4,900	$ 2,200	$ 12,700
Restricted Stock [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount			0		0
Share-Based Payment Arrangement, Expense			0	9,400	$ (2,100)	19,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)					0
The 2020 Equity Incentive Plan [Member] \| Share-Based Payment Arrangement, Option [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)								11,500,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)					3 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)					5 years
Share-Based Payment Arrangement, Amount Capitalized			$ 170,000	$ 229,000	$ 358,000	$ 457,000
Chief Executive Officer, and Other Employees [Member]
Deferred Compensation Arrangement with Individual, Shares Authorized for Issuance (in shares)			2,657,058	2,380,068	2,657,058	2,380,068
Non-Employees [Member]
Common Stock, Capital Shares Reserved for Future Issuance (in shares)			527,625	382,697	527,625	382,697
Board of Directors [Member] \| Restricted Stock [Member]
Share-Based Payment Arrangement, Expense			$ 20,500	$ 162,000	$ 158,000	$ 307,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)					617,978
Share Price (in dollars per share)			$ 0.89		$ 0.89
Board of Directors [Member] \| Restricted Stock [Member] \| Share-Based Payment Arrangement, Tranche One [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage					25.00%
Board of Directors [Member] \| Restricted Stock [Member] \| Share-Based Payment Arrangement, Tranche Two [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage					25.00%
Public Offering [Member]
Stock Issued During Period, Shares, New Issues (in shares)		4,765,000
Shares Issued, Price Per Share (in dollars per share)		$ 0.63
Proceeds from Issuance of Common Stock		$ 2,600,000
Over-Allotment Option [Member]
Stock Issued During Period, Shares, New Issues (in shares)	372,110	714,750
Proceeds from Issuance of Common Stock	$ 192,156