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Stock-Based Compensation - Stock incentive plan and other information (Details) - USD ($)			3 Months Ended		9 Months Ended
	Sep. 05, 2019	Nov. 02, 2010	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Sep. 17, 2020
Stock-Based Compensation
Unrecognized stock-based compensation expense			$ 847,000		$ 847,000
Options, Granted (in shares)						0
General and administrative expenses and research and development expense | Employees
Stock-Based Compensation
Allocated share-based compensation expense			184,000	$ 123,000	407,000	$ 347,000
Consultant | General and administrative expenses and research and development expense
Stock-Based Compensation
Allocated share-based compensation expense			$ 44,000	$ 54,000	$ 94,000	$ 161,000
2010 Stock Plan
Stock-Based Compensation
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
Share-based payment award, options, outstanding, number			7,566		7,566
Share-based payment award, options, issued, number			7,566		7,566
2010 Stock Plan | Minimum
Stock-Based Compensation
Share-based payment award, options, grants, expired period		5 years
2010 Stock Plan | Maximum
Stock-Based Compensation
Share-based payment award, options, grants, expired period		10 years
2020 Stock Plan
Stock-Based Compensation
Share-based payment award, options, outstanding, number			1,108,535		1,108,535		16,000
Share-based compensation arrangement by share-based payment award, number of shares authorized					4,500,000
Share-based payment award, options, issued, number			1,108,535		1,108,535

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