Note A - Basis of Presentation and Summary of Significant Accounting Policies (Details Textual) - USD ($)	3 Months Ended		12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Sales, Royalty and Licensing Revenue	$ 1,700,000	$ 2,500,000
Royalty Expense	$ 66,000	$ 92,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)	0	0
Share-Based Payment Arrangement, Expense	$ 200,000	$ 300,000
Deferred Compensation Arrangement with Individual, Cash Award Forfeited, Amount	0	$ 0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net			$ 0	$ 0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Transfers, Net			0	$ 0
Fair Value, Inputs, Level 1 [Member]
Fair Value, Net Asset (Liability)	0		0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Net Asset (Liability)	(1,056,000)		(1,599,000)
Fair Value, Inputs, Level 2 [Member] | Line of Credit [Member]
Debt Instrument, Fair Value Disclosure	2,500,000		1,900,000
Fair Value, Inputs, Level 2 [Member] | Term Loan [Member]
Debt Instrument, Fair Value Disclosure	8,900,000		8,900,000
Fair Value, Inputs, Level 3 [Member]
Fair Value, Net Asset (Liability)	$ 0		$ 0
The 2020 Omnibus Stock Incentive Plan [Member] | Scenario, Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Plan Term Extension (Year)	5 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares)	550,000
Restricted Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	170,724	279,792
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)	0	0
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period (in shares)	0	0