Note F - Common Stock and Warrants (Tables)

3 Months Ended

Mar. 31, 2022

Notes Tables

Schedule of Authorized Shares of Common Stock Reserved for Future Issuance [Table Text Block]

	March 31, 2022		December 31, 2021
Outstanding awards under equity incentive plans		2,186,769		1,273,879
Outstanding common stock warrants		4,252,600		4,252,600
Possible future issuances under equity incentive plans		4,697,270		4,209,935
Possible future issuances under employee stock purchase plans		1,500,000		1,500,000
Total common shares reserved for future issuance		12,636,639		11,236,414

Schedule of Common Stock Outstanding Roll Forward [Table Text Block]

	Shares of Common Stock
Balance as of January 1, 2022		35,005,640
Common stock issued as compensation to third-parties		7,649
Common stock repurchased as a result of the Stock Repurchase Plan		(589,792	)
Balance as of March 31, 2022		34,423,497