Note 10 - Share-based Compensation (Tables)

6 Months Ended

Jun. 30, 2021

Notes Tables

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

	Three months ended				Six months ended
	June 30,				June 30,
	2021		2020		2021		2020
	(in thousands)				(in thousands)
Stock option awards	$	562	$	495	$	1,156	$	995
Restricted stock units		307		308		640		587
Total share-based compensation	$	869	$	803	$	1,796	$	1,582

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

	Three months ended				Six months ended
	June 30,				June 30,
	2021		2020		2021		2020
	(in thousands)				(in thousands)
Cost of sales	$	100	$	88	$	200	$	167
Sales and marketing		119		134		288		293
General and administrative		557		495		1,118		951
Research and development		93		86		190		171
Total stock-based compensation	$	869	$	803	$	1,796	$	1,582