Note L - Income Taxes (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Operating Loss Carryforwards, Valuation Allowance	$ 0	$ 0
Percentage of Valuation Allowance	100.00%
Unrecognized Tax Benefits, Ending Balance	$ 0	0
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense, Total	0	0
Domestic Tax Authority [Member]
Operating Loss Carryforwards	$ 71,700,000	68,300,000
Open Tax Year	2019 2020 2021
State and Local Jurisdiction [Member]
Operating Loss Carryforwards	$ 60,500,000	$ 63,400,000