Note 9 - Share-based Compensation (Tables)

9 Months Ended

Sep. 30, 2019

Notes Tables

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

	Three months ended				Nine months ended
	September 30,				September 30,
	2019		2018		2019		2018
	(in thousands)				(in thousands)
Stock option awards	$	378	$	331	$	1,257	$	1,111
Restricted stock units		277		206		838		683
Total share-based compensation	$	655	$	537	$	2,095	$	1,794

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

	Three months ended				Nine months ended
	September 30,				September 30,
	2019		2018		2019		2018
	(in thousands)				(in thousands)
Cost of sales	$	75	$	61	$	233	$	209
Sales and marketing		155		155		459		429
General and administrative		356		266		1,194		967
Research and development		69		55		209		189
Total stock-based compensation	$	655	$	537	$	2,095	$	1,794