Note 10 - Share Option and Equity Incentive Plan (Tables)

9 Months Ended

Sep. 30, 2020

Notes Tables

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

	Three months ended September 30,				Nine months ended September 30,
(in thousands)	2020		2019		2020		2019
Cost of revenue	$	26	$	21	$	73	$	56
Research and development		159		132		451		244
Sales and marketing		213		332		354		910
General and administrative		702		498		1,789		1,464
Total share-based compensation	$	1,100	$	983	$	2,667	$	2,674