Note 10 - Share-based Compensation

9 Months Ended

Sep. 30, 2021

Notes to Financial Statements

Share-based Payment Arrangement [Text Block]

10. Share-based Compensation

Our Third Amended and Restated 2006 Stock Option and Incentive Plan allows for granting of incentive stock options, non-qualified stock options, stock appreciation rights, restricted stock units, unrestricted stock awards and deferred stock awards to our officers, employees, directors and consultants. The components of share-based compensation expense were as follows:

	Three months ended				Nine months ended
	September 30,				September 30,
	2021		2020		2021		2020
	(in thousands)				(in thousands)
Stock option awards	$	504	$	455	$	1,660	$	1,450
Restricted stock units		293		232		933		819
Total share-based compensation	$	797	$	687	$	2,593	$	2,269

Stock-based compensation is included in our statements of operations as follows:

	Three months ended				Nine months ended
	September 30,				September 30,
	2021		2020		2021		2020
	(in thousands)				(in thousands)
Cost of sales	$	91	$	68	$	291	$	237
Sales and marketing		124		103		412		397
General and administrative		499		451		1,617		1,400
Research and development		83		65		273		235
Total stock-based compensation	$	797	$	687	$	2,593	$	2,269

We did not grant any options during the nine-month period ended September 30, 2021. During the nine-month period ended September 30, 2020, we granted options for the purchase of 20,000 shares of our common stock. During the nine months ended September 30, 2021 and 2020, we awarded restricted stock units of 1,157 and 2,292, respectively. We issued approximately 173,000 and 141,000 shares of common stock following the exercise or vesting of underlying stock options or restricted stock units during the nine months ended September 30, 2021 and 2020, respectively.