Note F - Commitments and Contingencies (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Jan. 01, 2019
Operating Lease, Liability	$ 72,000	$ 85,000
Operating Lease, Right-of-Use Asset	72,000	85,000
Operating Lease, Expense	40,000	35,000
Amount of Guarantee Obligations, Noncurrent	11,000	11,000
BB&T Bank [Member] | CBOP Loan [Member]
Long-Term Debt	$ 1,358,000	$ 1,835,000
Cumulative Effect, Period of Adoption, Adjusted Balance [Member] | Accounting Standards Update 2016-02 [Member]
Operating Lease, Liability			$ 78,000
Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-02 [Member]
Operating Lease, Right-of-Use Asset			$ 78,000