Note 10 - Significant Risk Concentrations (Tables)

6 Months Ended

Jun. 30, 2021

Notes Tables

Schedule of Rebate Credit [Table Text Block]

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Reductions to cost of revenue	$	103	$	41	$	209	$	154
Reductions to marketing expense		120		721		177		940