Note C - Summary of Significant Accounting Policies (Details Textual)	1 Months Ended	12 Months Ended
	Dec. 31, 2023 USD ($)	Dec. 31, 2023 USD ($) shares	Dec. 31, 2022 USD ($) shares
Payments for Repurchase of Redeemable Noncontrolling Interest	$ 214,000
Allowance for Sales Returns		$ 0	$ 179,000
Number of Operating Segments		2
Marketable Securities, Current	2,976,573	$ 2,976,573	0
Accounts Receivable, Allowance for Credit Loss	10,000	10,000	10,000
Unrecognized Tax Benefits	0	0	0
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense		$ 0	$ 0
Weighted Average Number of Shares Outstanding, Basic (in shares) | shares		72,775,781	70,607,338
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | shares		3,771,151	7,855,160
Marketable Securities	$ 2,976,573	$ 2,976,573
Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	3 years	3 years
Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	7 years	7 years
US Treasury Securities [Member]
Marketable Securities, Current	$ 3,000,000	$ 3,000,000
Money Market Funds [Member]
Cash Equivalents, at Carrying Value	$ 3,000,000	$ 3,000,000	$ 8,700,000