Note 9 - Share-based Compensation (Tables)

9 Months Ended

Sep. 30, 2023

Notes Tables

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

	Three months ended				Nine months ended
	September 30,				September 30,
	2023		2022		2023		2022
	(in thousands)				(in thousands)
Stock option awards	$	676	$	614	$	2,009	$	1,840
Restricted stock units		481		432		1,443		1,231
Performance-based restricted stock units		156		140		463		418
Total share-based compensation	$	1,313	$	1,186	$	3,915	$	3,489

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

	Three months ended				Nine months ended
	September 30,				September 30,
	2023		2022		2023		2022
	(in thousands)				(in thousands)
Cost of sales	$	168	$	142	$	504	$	415
Sales and marketing		248		205		712		607
General and administrative		765		720		2,310		2,127
Research and development		132		119		389		340
Total stock-based compensation	$	1,313	$	1,186	$	3,915	$	3,489