Note K - Employment Contract and Consulting Agreements (Details Textual) - USD ($)		1 Months Ended	12 Months Ended
	Dec. 01, 2016	Jul. 31, 2017	Dec. 31, 2019	Dec. 31, 2018
Chief Executive Officer [Member]
Deferred Compensation Arrangement with Individual, Compensation Expense	$ 280,000		$ 493,000	$ 386,000
Chief Executive Officer, Employment Agreement Period	1 year
Chief Executive Officer, Automatic Extended Employment Agreement Period	1 year
Previous President and Chief Executive Officer [Member]
Employment Agreement Term		10 years
Employment Agreement, Base Compensation		$ 300,000
Employment Agreement, Base Compensation, Cash		100,000
Employment Agreement, Base Compensation, Common Stock Value		$ 200,000
Consulting Agreement, Term		10 years
Consulting Agreement, Annual Payment		$ 100,000