Note 9 - Warrants

3 Months Ended

Mar. 31, 2022

Notes to Financial Statements

Warrants Disclosure [Text Block]

9.      Warrants

The following table summarizes information about warrants outstanding and exercisable at March 31, 2022:

Range of Exercise Price	Number Outstanding/Exercisable		Weighted Average Remaining Life in Years	Weighted Average Exercise Price
$5.10		2,500,000	4.37	$	5.10
$6.45		350,000	4.37	$	6.45
		2,850,000