Note 9 - Share-based Compensation (Tables)

3 Months Ended

Mar. 31, 2020

Notes Tables

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

	Three months ended
	March 31,
	2020		2019
	(in thousands)
Stock option awards	$	500	$	447
Restricted stock units		279		299
Total share-based compensation	$	779	$	746

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

	Three months ended
	March 31,
	2020		2019
	(in thousands)
Cost of sales	$	81	$	82
Sales and marketing		159		158
General and administrative		454		419
Research and development		85		87
Total stock-based compensation	$	779	$	746