Note I - Stockholders' Equity - Summary of Shares to be Issued (Details)	12 Months Ended
	Dec. 31, 2019 shares
Shares-to-be-issued, outstanding December 31, 2018 (in shares)	2,470,566
Granted in current year (in shares)	2,103,793
Issued in current year (in shares)	(2,198,599)
Shares-to-be-issued outstanding, December 31, 2019 (in shares)	2,375,760