Quarterly report pursuant to Section 13 or 15(d)

Cover
- Document And Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Significant Accounting Policies (Policies)
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Notes Details

Note 5 - Stock-based Compensation (Details Textual)

v3.22.1

Note 5 - Stock-based Compensation (Details Textual) - USD ($)		3 Months Ended		6 Months Ended
	Oct. 01, 2021	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021	Jun. 18, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)				250,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period (in shares)				0	0
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total		$ 48,000		$ 48,000
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)				2 years 2 months 4 days
Restricted Stock [Member]
Share-Based Payment Arrangement, Expense		$ 10,000	$ 104,000	$ 20,000	$ 104,000
The 2013 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)	34,114,256					31,114,256
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized (in shares)	3,000,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)		5,566,257		5,566,257
Share-Based Payment Arrangement, Expense		$ 145,000	89,000	$ 287,000	174,000
The 2013 Plan [Member] \| Research and Development Expense [Member]
Share-Based Payment Arrangement, Expense		41,000	27,000	94,000	53,000
The 2013 Plan [Member] \| General and Administrative Expense [Member]
Share-Based Payment Arrangement, Expense		$ 104,000	$ 62,000	$ 193,000	$ 121,000
The 2013 Plan [Member] \| Employees and Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)				250,000
The 2013 Plan [Member] \| Consultants [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)				0

- Definition

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

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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 difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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