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Note 6 - Common Stock Options (Tables)

9 Months Ended

Sep. 30, 2020

Notes Tables

Share-based Payment Arrangement, Option, Activity [Table Text Block]

		Options				Exercise Price				Weighted-Average Exercise Price
Options outstanding at December 31, 2019			6,965,730			$2.71	-	$21.99			6.09
Granted			214,500			8.89	-	14.77			16.71
Exercised			(1,704,905	)		2.71	-	19.09			6.11
Forfeitures			(57,042	)		4.26	-	21.80			8.53
Options outstanding at September 30, 2020			5,418,283			$2.71	-	$21.99			6.20

X

- Definition

Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

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- References

No definition available.

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