Note 10 - Share-based Compensation (Tables)

9 Months Ended

Sep. 30, 2021

Notes Tables

Share-based Payment Arrangement, Cost by Plan [Table Text Block]

	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

Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]

	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