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Stock-Based Compensation - Stock incentive plan and other information (Details) - USD ($)			12 Months Ended
	Sep. 05, 2019	Nov. 02, 2010	Dec. 31, 2024	Dec. 31, 2023	Sep. 17, 2020
Stock-Based Compensation and Warrants
Unrecognized stock-based compensation expense			$ 596,000
Proceeds from Stock Options Exercised			0	$ 0
General and Administrative Expenses and Research and Development Expense | Employees
Stock-Based Compensation and Warrants
Allocated share-based compensation expense			$ 462,000	$ 373,000
Employees And Directors
Stock-Based Compensation and Warrants
Share-based payment award, options, grants in period, gross			420	87,800
Value of options granted			$ 1,500,000	$ 900,000
Consultant | General and Administrative Expenses and Research and Development Expense
Stock-Based Compensation and Warrants
Allocated share-based compensation expense			$ 209,000	$ 179,000
2010 Stock Plan
Stock-Based Compensation and Warrants
Share-based payment award, options, outstanding, number		343
Share-based compensation arrangement by share-based payment award, number of shares authorized	16,000
Share-based compensation arrangement by share-based payment award, shares issued			0
2010 Stock Plan | Board of Directors
Stock-Based Compensation and Warrants
Share-based payment award, options, outstanding, number			7,670
Share-based payment award, options, issued, number			7,670
2010 Stock Plan | Minimum
Stock-Based Compensation and Warrants
Share-based payment award, options, grants, expired period		5 years
2010 Stock Plan | Maximum
Stock-Based Compensation and Warrants
Share-based payment award, options, grants, expired period		10 years
2020 Stock Plan
Stock-Based Compensation and Warrants
Share-based payment award, options, outstanding, number			167,364		16,000
Share-based compensation arrangement by share-based payment award, number of shares authorized				2,500,000
Share-based payment award, options, issued, number			175,034

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