Note K - Income Taxes (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Operating Loss Carryforwards, Valuation Allowance	$ 0	$ 0
Percentage of Valuation Allowance	100.00%
Unrecognized Tax Benefits	$ 0	0
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	0	0
Domestic Tax Authority [Member]
Operating Loss Carryforwards	74,500,000	71,700,000
Operating Loss Carryforwards Subject to Expiration	38,100,000
Operating Loss Carryforwards, Indefinite Lived	$ 36,400,000
Open Tax Year	2020 2021 2022
State and Local Jurisdiction [Member]
Operating Loss Carryforwards	$ 63,300,000	$ 60,500,000